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-rw-r--r--drivers/char/Kconfig6
-rw-r--r--drivers/char/amiserial.c33
-rw-r--r--drivers/char/cyclades.c89
-rw-r--r--drivers/char/epca.c17
-rw-r--r--drivers/char/esp.c67
-rw-r--r--drivers/char/hvc_console.c6
-rw-r--r--drivers/char/hvcs.c10
-rw-r--r--drivers/char/isicom.c24
-rw-r--r--drivers/char/istallion.c26
-rw-r--r--drivers/char/moxa.c73
-rw-r--r--drivers/char/mxser.c2
-rw-r--r--drivers/char/n_hdlc.c18
-rw-r--r--drivers/char/n_r3964.c10
-rw-r--r--drivers/char/n_tty.c66
-rw-r--r--drivers/char/pcmcia/synclink_cs.c28
-rw-r--r--drivers/char/pty.c4
-rw-r--r--drivers/char/rio/riointr.c13
-rw-r--r--drivers/char/riscom8.c39
-rw-r--r--drivers/char/rocket.c19
-rw-r--r--drivers/char/selection.c5
-rw-r--r--drivers/char/ser_a2232.c8
-rw-r--r--drivers/char/serial167.c35
-rw-r--r--drivers/char/specialix.c38
-rw-r--r--drivers/char/stallion.c50
-rw-r--r--drivers/char/sx.c13
-rw-r--r--drivers/char/synclink.c43
-rw-r--r--drivers/char/synclink_gt.c35
-rw-r--r--drivers/char/synclinkmp.c34
-rw-r--r--drivers/char/tty_io.c266
-rw-r--r--drivers/char/viocons.c3
-rw-r--r--drivers/char/vme_scc.c16
31 files changed, 536 insertions, 560 deletions
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 977a74e16efb..d6fcd0a36f9f 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -80,7 +80,7 @@ config SERIAL_NONSTANDARD
config COMPUTONE
tristate "Computone IntelliPort Plus serial support"
- depends on SERIAL_NONSTANDARD && BROKEN_ON_SMP
+ depends on SERIAL_NONSTANDARD
---help---
This driver supports the entire family of Intelliport II/Plus
controllers with the exception of the MicroChannel controllers and
@@ -153,7 +153,7 @@ config DIGIEPCA
config ESPSERIAL
tristate "Hayes ESP serial port support"
- depends on SERIAL_NONSTANDARD && ISA && BROKEN_ON_SMP && ISA_DMA_API
+ depends on SERIAL_NONSTANDARD && ISA && ISA_DMA_API
help
This is a driver which supports Hayes ESP serial ports. Both single
port cards and multiport cards are supported. Make sure to read
@@ -166,7 +166,7 @@ config ESPSERIAL
config MOXA_INTELLIO
tristate "Moxa Intellio support"
- depends on SERIAL_NONSTANDARD && BROKEN_ON_SMP
+ depends on SERIAL_NONSTANDARD
help
Say Y here if you have a Moxa Intellio multiport serial card.
diff --git a/drivers/char/amiserial.c b/drivers/char/amiserial.c
index 10c81ecdace8..869518e4035f 100644
--- a/drivers/char/amiserial.c
+++ b/drivers/char/amiserial.c
@@ -265,8 +265,9 @@ static _INLINE_ void receive_chars(struct async_struct *info)
int status;
int serdatr;
struct tty_struct *tty = info->tty;
- unsigned char ch;
+ unsigned char ch, flag;
struct async_icount *icount;
+ int oe = 0;
icount = &info->state->icount;
@@ -282,15 +283,12 @@ static _INLINE_ void receive_chars(struct async_struct *info)
status |= UART_LSR_OE;
ch = serdatr & 0xff;
- if (tty->flip.count >= TTY_FLIPBUF_SIZE)
- goto ignore_char;
- *tty->flip.char_buf_ptr = ch;
icount->rx++;
#ifdef SERIAL_DEBUG_INTR
printk("DR%02x:%02x...", ch, status);
#endif
- *tty->flip.flag_buf_ptr = 0;
+ flag = TTY_NORMAL;
/*
* We don't handle parity or frame errors - but I have left
@@ -319,7 +317,7 @@ static _INLINE_ void receive_chars(struct async_struct *info)
* should be ignored.
*/
if (status & info->ignore_status_mask)
- goto ignore_char;
+ goto out;
status &= info->read_status_mask;
@@ -327,33 +325,28 @@ static _INLINE_ void receive_chars(struct async_struct *info)
#ifdef SERIAL_DEBUG_INTR
printk("handling break....");
#endif
- *tty->flip.flag_buf_ptr = TTY_BREAK;
+ flag = TTY_BREAK;
if (info->flags & ASYNC_SAK)
do_SAK(tty);
} else if (status & UART_LSR_PE)
- *tty->flip.flag_buf_ptr = TTY_PARITY;
+ flag = TTY_PARITY;
else if (status & UART_LSR_FE)
- *tty->flip.flag_buf_ptr = TTY_FRAME;
+ flag = TTY_FRAME;
if (status & UART_LSR_OE) {
/*
* Overrun is special, since it's
* reported immediately, and doesn't
* affect the current character
*/
- if (tty->flip.count < TTY_FLIPBUF_SIZE) {
- tty->flip.count++;
- tty->flip.flag_buf_ptr++;
- tty->flip.char_buf_ptr++;
- *tty->flip.flag_buf_ptr = TTY_OVERRUN;
- }
+ oe = 1;
}
}
- tty->flip.flag_buf_ptr++;
- tty->flip.char_buf_ptr++;
- tty->flip.count++;
- ignore_char:
-
+ tty_insert_flip_char(tty, ch, flag);
+ if (oe == 1)
+ tty_insert_flip_char(tty, 0, TTY_OVERRUN);
tty_flip_buffer_push(tty);
+out:
+ return;
}
static _INLINE_ void transmit_chars(struct async_struct *info)
diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c
index c8e7daecad72..39c61a71176e 100644
--- a/drivers/char/cyclades.c
+++ b/drivers/char/cyclades.c
@@ -641,6 +641,7 @@ static char rcsid[] =
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/tty.h>
+#include <linux/tty_flip.h>
#include <linux/serial.h>
#include <linux/major.h>
#include <linux/string.h>
@@ -1086,7 +1087,7 @@ cyy_interrupt(int irq, void *dev_id, struct pt_regs *regs)
int had_work;
int mdm_change;
int mdm_status;
-
+ int len;
if((cinfo = (struct cyclades_card *)dev_id) == 0){
#ifdef CY_DEBUG_INTERRUPTS
printk("cyy_interrupt: spurious interrupt %d\n\r", irq);
@@ -1163,63 +1164,43 @@ cyy_interrupt(int irq, void *dev_id, struct pt_regs *regs)
info->icount.rx++;
continue;
}
- if (tty->flip.count < TTY_FLIPBUF_SIZE){
- tty->flip.count++;
+ if (tty_buffer_request_room(tty, 1)) {
if (data & info->read_status_mask){
if(data & CyBREAK){
- *tty->flip.flag_buf_ptr++ =
- TTY_BREAK;
- *tty->flip.char_buf_ptr++ =
- cy_readb(base_addr+(CyRDSR<<index));
+ tty_insert_flip_char(tty, cy_readb(base_addr+(CyRDSR<<index)), TTY_BREAK);
info->icount.rx++;
if (info->flags & ASYNC_SAK){
do_SAK(tty);
}
}else if(data & CyFRAME){
- *tty->flip.flag_buf_ptr++ =
- TTY_FRAME;
- *tty->flip.char_buf_ptr++ =
- cy_readb(base_addr+(CyRDSR<<index));
+ tty_insert_flip_char(tty, cy_readb(base_addr+(CyRDSR<<index)), TTY_FRAME);
info->icount.rx++;
info->idle_stats.frame_errs++;
}else if(data & CyPARITY){
- *tty->flip.flag_buf_ptr++ =
- TTY_PARITY;
- *tty->flip.char_buf_ptr++ =
- cy_readb(base_addr+(CyRDSR<<index));
+ /* Pieces of seven... */
+ tty_insert_flip_char(tty, cy_readb(base_addr+(CyRDSR<<index)), TTY_PARITY);
info->icount.rx++;
info->idle_stats.parity_errs++;
}else if(data & CyOVERRUN){
- *tty->flip.flag_buf_ptr++ =
- TTY_OVERRUN;
- *tty->flip.char_buf_ptr++ = 0;
+ tty_insert_flip_char(tty, 0, TTY_OVERRUN);
info->icount.rx++;
/* If the flip buffer itself is
overflowing, we still lose
the next incoming character.
*/
- if(tty->flip.count
- < TTY_FLIPBUF_SIZE){
- tty->flip.count++;
- *tty->flip.flag_buf_ptr++ =
- TTY_NORMAL;
- *tty->flip.char_buf_ptr++ =
- cy_readb(base_addr+(CyRDSR<<index));
- info->icount.rx++;
- }
+ tty_insert_flip_char(tty, cy_readb(base_addr+(CyRDSR<<index)), TTY_FRAME);
+ info->icount.rx++;
info->idle_stats.overruns++;
/* These two conditions may imply */
/* a normal read should be done. */
/* }else if(data & CyTIMEOUT){ */
/* }else if(data & CySPECHAR){ */
- }else{
- *tty->flip.flag_buf_ptr++ = 0;
- *tty->flip.char_buf_ptr++ = 0;
- info->icount.rx++;
+ }else {
+ tty_insert_flip_char(tty, 0, TTY_NORMAL);
+ info->icount.rx++;
}
}else{
- *tty->flip.flag_buf_ptr++ = 0;
- *tty->flip.char_buf_ptr++ = 0;
+ tty_insert_flip_char(tty, 0, TTY_NORMAL);
info->icount.rx++;
}
}else{
@@ -1240,14 +1221,10 @@ cyy_interrupt(int irq, void *dev_id, struct pt_regs *regs)
info->mon.char_max = char_count;
info->mon.char_last = char_count;
#endif
- while(char_count--){
- if (tty->flip.count >= TTY_FLIPBUF_SIZE){
- break;
- }
- tty->flip.count++;
+ len = tty_buffer_request_room(tty, char_count);
+ while(len--){
data = cy_readb(base_addr+(CyRDSR<<index));
- *tty->flip.flag_buf_ptr++ = TTY_NORMAL;
- *tty->flip.char_buf_ptr++ = data;
+ tty_insert_flip_char(tty, data, TTY_NORMAL);
info->idle_stats.recv_bytes++;
info->icount.rx++;
#ifdef CY_16Y_HACK
@@ -1256,7 +1233,7 @@ cyy_interrupt(int irq, void *dev_id, struct pt_regs *regs)
}
info->idle_stats.recv_idle = jiffies;
}
- schedule_delayed_work(&tty->flip.work, 1);
+ schedule_delayed_work(&tty->buf.work, 1);
}
/* end of service */
cy_writeb(base_addr+(CyRIR<<index), (save_xir & 0x3f));
@@ -1551,6 +1528,7 @@ cyz_handle_rx(struct cyclades_port *info,
struct cyclades_card *cinfo = &cy_card[info->card];
struct tty_struct *tty = info->tty;
volatile int char_count;
+ int len;
#ifdef BLOCKMOVE
int small_count;
#else
@@ -1606,18 +1584,11 @@ cyz_handle_rx(struct cyclades_port *info,
tty->flip.count += small_count;
}
#else
- while(char_count--){
- if (tty->flip.count >= N_TTY_BUF_SIZE - tty->read_cnt)
- break;
-
- if (tty->flip.count >= TTY_FLIPBUF_SIZE)
- break;
-
+ len = tty_buffer_request_room(tty, char_count);
+ while(len--){
data = cy_readb(cinfo->base_addr + rx_bufaddr + new_rx_get);
new_rx_get = (new_rx_get + 1) & (rx_bufsize - 1);
- tty->flip.count++;
- *tty->flip.flag_buf_ptr++ = TTY_NORMAL;
- *tty->flip.char_buf_ptr++ = data;
+ tty_insert_flip_char(tty, data, TTY_NORMAL);
info->idle_stats.recv_bytes++;
info->icount.rx++;
}
@@ -1635,7 +1606,7 @@ cyz_handle_rx(struct cyclades_port *info,
}
#endif
info->idle_stats.recv_idle = jiffies;
- schedule_delayed_work(&tty->flip.work, 1);
+ schedule_delayed_work(&tty->buf.work, 1);
}
/* Update rx_get */
cy_writel(&buf_ctrl->rx_get, new_rx_get);
@@ -1763,23 +1734,17 @@ cyz_handle_cmd(struct cyclades_card *cinfo)
switch(cmd) {
case C_CM_PR_ERROR:
- tty->flip.count++;
- *tty->flip.flag_buf_ptr++ = TTY_PARITY;
- *tty->flip.char_buf_ptr++ = 0;
+ tty_insert_flip_char(tty, 0, TTY_PARITY);
info->icount.rx++;
special_count++;
break;
case C_CM_FR_ERROR:
- tty->flip.count++;
- *tty->flip.flag_buf_ptr++ = TTY_FRAME;
- *tty->flip.char_buf_ptr++ = 0;
+ tty_insert_flip_char(tty, 0, TTY_FRAME);
info->icount.rx++;
special_count++;
break;
case C_CM_RXBRK:
- tty->flip.count++;
- *tty->flip.flag_buf_ptr++ = TTY_BREAK;
- *tty->flip.char_buf_ptr++ = 0;
+ tty_insert_flip_char(tty, 0, TTY_BREAK);
info->icount.rx++;
special_count++;
break;
@@ -1844,7 +1809,7 @@ cyz_handle_cmd(struct cyclades_card *cinfo)
if(delta_count)
cy_sched_event(info, Cy_EVENT_DELTA_WAKEUP);
if(special_count)
- schedule_delayed_work(&tty->flip.work, 1);
+ schedule_delayed_work(&tty->buf.work, 1);
}
}
diff --git a/drivers/char/epca.c b/drivers/char/epca.c
index 407708a001e4..765c5c108bf4 100644
--- a/drivers/char/epca.c
+++ b/drivers/char/epca.c
@@ -1786,9 +1786,7 @@ static void doevent(int crd)
if (tty) { /* Begin if valid tty */
if (event & BREAK_IND) { /* Begin if BREAK_IND */
/* A break has been indicated */
- tty->flip.count++;
- *tty->flip.flag_buf_ptr++ = TTY_BREAK;
- *tty->flip.char_buf_ptr++ = 0;
+ tty_insert_flip_char(tty, 0, TTY_BREAK);
tty_schedule_flip(tty);
} else if (event & LOWTX_IND) { /* Begin LOWTX_IND */
if (ch->statusflags & LOWWAIT)
@@ -2124,7 +2122,6 @@ static void receive_data(struct channel *ch)
int dataToRead, wrapgap, bytesAvailable;
unsigned int tail, head;
unsigned int wrapmask;
- int rc;
/* ---------------------------------------------------------------
This routine is called by doint when a receive data event
@@ -2162,16 +2159,15 @@ static void receive_data(struct channel *ch)
return;
}
- if (tty->flip.count == TTY_FLIPBUF_SIZE)
+ if (tty_buffer_request_room(tty, bytesAvailable + 1) == 0)
return;
if (readb(&bc->orun)) {
writeb(0, &bc->orun);
printk(KERN_WARNING "epca; overrun! DigiBoard device %s\n",tty->name);
+ tty_insert_flip_char(tty, 0, TTY_OVERRUN);
}
rxwinon(ch);
- rptr = tty->flip.char_buf_ptr;
- rc = tty->flip.count;
while (bytesAvailable > 0) { /* Begin while there is data on the card */
wrapgap = (head >= tail) ? head - tail : ch->rxbufsize - tail;
/* ---------------------------------------------------------------
@@ -2183,8 +2179,7 @@ static void receive_data(struct channel *ch)
/* --------------------------------------------------------------
Make sure we don't overflow the buffer
----------------------------------------------------------------- */
- if ((rc + dataToRead) > TTY_FLIPBUF_SIZE)
- dataToRead = TTY_FLIPBUF_SIZE - rc;
+ dataToRead = tty_prepare_flip_string(tty, &rptr, dataToRead);
if (dataToRead == 0)
break;
/* ---------------------------------------------------------------
@@ -2192,13 +2187,9 @@ static void receive_data(struct channel *ch)
for translation if necessary.
------------------------------------------------------------------ */
memcpy_fromio(rptr, ch->rxptr + tail, dataToRead);
- rc += dataToRead;
- rptr += dataToRead;
tail = (tail + dataToRead) & wrapmask;
bytesAvailable -= dataToRead;
} /* End while there is data on the card */
- tty->flip.count = rc;
- tty->flip.char_buf_ptr = rptr;
globalwinon(ch);
writew(tail, &bc->rout);
/* Must be called with global data */
diff --git a/drivers/char/esp.c b/drivers/char/esp.c
index 9f53d2fcc360..e469f641c728 100644
--- a/drivers/char/esp.c
+++ b/drivers/char/esp.c
@@ -345,26 +345,22 @@ static inline void receive_chars_pio(struct esp_struct *info, int num_bytes)
for (i = 0; i < num_bytes; i++) {
if (!(err_buf->data[i] & status_mask)) {
- *(tty->flip.char_buf_ptr++) = pio_buf->data[i];
+ int flag = 0;
if (err_buf->data[i] & 0x04) {
- *(tty->flip.flag_buf_ptr++) = TTY_BREAK;
-
+ flag = TTY_BREAK;
if (info->flags & ASYNC_SAK)
do_SAK(tty);
}
else if (err_buf->data[i] & 0x02)
- *(tty->flip.flag_buf_ptr++) = TTY_FRAME;
+ flag = TTY_FRAME;
else if (err_buf->data[i] & 0x01)
- *(tty->flip.flag_buf_ptr++) = TTY_PARITY;
- else
- *(tty->flip.flag_buf_ptr++) = 0;
-
- tty->flip.count++;
+ flag = TTY_PARITY;
+ tty_insert_flip_char(tty, pio_buf->data[i], flag);
}
}
- schedule_delayed_work(&tty->flip.work, 1);
+ schedule_delayed_work(&tty->buf.work, 1);
info->stat_flags &= ~ESP_STAT_RX_TIMEOUT;
release_pio_buffer(pio_buf);
@@ -397,7 +393,6 @@ static inline void receive_chars_dma_done(struct esp_struct *info,
int num_bytes;
unsigned long flags;
-
flags=claim_dma_lock();
disable_dma(dma);
clear_dma_ff(dma);
@@ -408,38 +403,31 @@ static inline void receive_chars_dma_done(struct esp_struct *info,
info->icount.rx += num_bytes;
- memcpy(tty->flip.char_buf_ptr, dma_buffer, num_bytes);
- tty->flip.char_buf_ptr += num_bytes;
- tty->flip.count += num_bytes;
- memset(tty->flip.flag_buf_ptr, 0, num_bytes);
- tty->flip.flag_buf_ptr += num_bytes;
-
if (num_bytes > 0) {
- tty->flip.flag_buf_ptr--;
+ tty_insert_flip_string(tty, dma_buffer, num_bytes - 1);
status &= (0x1c & info->read_status_mask);
+
+ /* Is the status significant or do we throw the last byte ? */
+ if (!(status & info->ignore_status_mask)) {
+ int statflag = 0;
- if (status & info->ignore_status_mask) {
- tty->flip.count--;
- tty->flip.char_buf_ptr--;
- tty->flip.flag_buf_ptr--;
- } else if (status & 0x10) {
- *tty->flip.flag_buf_ptr = TTY_BREAK;
- (info->icount.brk)++;
- if (info->flags & ASYNC_SAK)
- do_SAK(tty);
- } else if (status & 0x08) {
- *tty->flip.flag_buf_ptr = TTY_FRAME;
- (info->icount.frame)++;
- }
- else if (status & 0x04) {
- *tty->flip.flag_buf_ptr = TTY_PARITY;
- (info->icount.parity)++;
+ if (status & 0x10) {
+ statflag = TTY_BREAK;
+ (info->icount.brk)++;
+ if (info->flags & ASYNC_SAK)
+ do_SAK(tty);
+ } else if (status & 0x08) {
+ statflag = TTY_FRAME;
+ (info->icount.frame)++;
+ }
+ else if (status & 0x04) {
+ statflag = TTY_PARITY;
+ (info->icount.parity)++;
+ }
+ tty_insert_flip_char(tty, dma_buffer[num_bytes - 1], statflag);
}
-
- tty->flip.flag_buf_ptr++;
-
- schedule_delayed_work(&tty->flip.work, 1);
+ schedule_delayed_work(&tty->buf.work, 1);
}
if (dma_bytes != num_bytes) {
@@ -693,8 +681,7 @@ static irqreturn_t rs_interrupt_single(int irq, void *dev_id,
num_bytes = serial_in(info, UART_ESI_STAT1) << 8;
num_bytes |= serial_in(info, UART_ESI_STAT2);
- if (num_bytes > (TTY_FLIPBUF_SIZE - info->tty->flip.count))
- num_bytes = TTY_FLIPBUF_SIZE - info->tty->flip.count;
+ num_bytes = tty_buffer_request_room(info->tty, num_bytes);
if (num_bytes) {
if (dma_bytes ||
diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c
index f92177634677..1994a92d4733 100644
--- a/drivers/char/hvc_console.c
+++ b/drivers/char/hvc_console.c
@@ -597,9 +597,7 @@ static int hvc_poll(struct hvc_struct *hp)
/* Read data if any */
for (;;) {
- int count = N_INBUF;
- if (count > (TTY_FLIPBUF_SIZE - tty->flip.count))
- count = TTY_FLIPBUF_SIZE - tty->flip.count;
+ int count = tty_buffer_request_room(tty, N_INBUF);
/* If flip is full, just reschedule a later read */
if (count == 0) {
@@ -635,7 +633,7 @@ static int hvc_poll(struct hvc_struct *hp)
tty_insert_flip_char(tty, buf[i], 0);
}
- if (tty->flip.count)
+ if (count)
tty_schedule_flip(tty);
/*
diff --git a/drivers/char/hvcs.c b/drivers/char/hvcs.c
index 53dc77c760fc..831eb4e8d9d3 100644
--- a/drivers/char/hvcs.c
+++ b/drivers/char/hvcs.c
@@ -456,12 +456,11 @@ static int hvcs_io(struct hvcs_struct *hvcsd)
/* remove the read masks */
hvcsd->todo_mask &= ~(HVCS_READ_MASK);
- if ((tty->flip.count + HVCS_BUFF_LEN) < TTY_FLIPBUF_SIZE) {
+ if (tty_buffer_request_room(tty, HVCS_BUFF_LEN) >= HVCS_BUFF_LEN) {
got = hvc_get_chars(unit_address,
&buf[0],
HVCS_BUFF_LEN);
- for (i=0;got && i<got;i++)
- tty_insert_flip_char(tty, buf[i], TTY_NORMAL);
+ tty_insert_flip_string(tty, buf, got);
}
/* Give the TTY time to process the data we just sent. */
@@ -469,10 +468,9 @@ static int hvcs_io(struct hvcs_struct *hvcsd)
hvcsd->todo_mask |= HVCS_QUICK_READ;
spin_unlock_irqrestore(&hvcsd->lock, flags);
- if (tty->flip.count) {
- /* This is synch because tty->low_latency == 1 */
+ /* This is synch because tty->low_latency == 1 */
+ if(got)
tty_flip_buffer_push(tty);
- }
if (!got) {
/* Do this _after_ the flip_buffer_push */
diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c
index 1bbf507adda5..86033bed5d6c 100644
--- a/drivers/char/isicom.c
+++ b/drivers/char/isicom.c
@@ -115,6 +115,7 @@
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/tty.h>
+#include <linux/tty_flip.h>
#include <linux/termios.h>
#include <linux/fs.h>
#include <linux/sched.h>
@@ -773,6 +774,7 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id,
unsigned short base, header, word_count, count;
unsigned char channel;
short byte_count;
+ unsigned char *rp;
card = (struct isi_board *) dev_id;
@@ -903,14 +905,10 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id,
break;
case 1: /* Received Break !!! */
- if (tty->flip.count >= TTY_FLIPBUF_SIZE)
- break;
- *tty->flip.flag_buf_ptr++ = TTY_BREAK;
- *tty->flip.char_buf_ptr++ = 0;
- tty->flip.count++;
+ tty_insert_flip_char(tty, 0, TTY_BREAK);
if (port->flags & ASYNC_SAK)
do_SAK(tty);
- schedule_delayed_work(&tty->flip.work, 1);
+ tty_flip_buffer_push(tty);
break;
case 2: /* Statistics */
@@ -923,23 +921,19 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id,
}
}
else { /* Data Packet */
- count = min_t(unsigned short, byte_count, (TTY_FLIPBUF_SIZE - tty->flip.count));
+
+ count = tty_prepare_flip_string(tty, &rp, byte_count & ~1);
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "ISICOM: Intr: Can rx %d of %d bytes.\n",
count, byte_count);
#endif
word_count = count >> 1;
- insw(base, tty->flip.char_buf_ptr, word_count);
- tty->flip.char_buf_ptr += (word_count << 1);
+ insw(base, rp, word_count);
byte_count -= (word_count << 1);
if (count & 0x0001) {
- *tty->flip.char_buf_ptr++ = (char)(inw(base) & 0xff);
+ tty_insert_flip_char(tty, inw(base) & 0xff, TTY_NORMAL);
byte_count -= 2;
}
- memset(tty->flip.flag_buf_ptr, 0, count);
- tty->flip.flag_buf_ptr += count;
- tty->flip.count += count;
-
if (byte_count > 0) {
printk(KERN_DEBUG "ISICOM: Intr(0x%x:%d): Flip buffer overflow! dropping bytes...\n",
base, channel+1);
@@ -948,7 +942,7 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id,
byte_count -= 2;
}
}
- schedule_delayed_work(&tty->flip.work, 1);
+ tty_flip_buffer_push(tty);
}
if (card->isa == YES)
ClearInterrupt(base);
diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c
index 24435f8daa68..28c5a3193b81 100644
--- a/drivers/char/istallion.c
+++ b/drivers/char/istallion.c
@@ -2711,17 +2711,13 @@ static void stli_read(stlibrd_t *brdp, stliport_t *portp)
stlen = size - tail;
}
- len = MIN(len, (TTY_FLIPBUF_SIZE - tty->flip.count));
+ len = tty_buffer_request_room(tty, len);
+ /* FIXME : iomap ? */
shbuf = (volatile char *) EBRDGETMEMPTR(brdp, portp->rxoffset);
while (len > 0) {
stlen = MIN(len, stlen);
- memcpy(tty->flip.char_buf_ptr, (char *) (shbuf + tail), stlen);
- memset(tty->flip.flag_buf_ptr, 0, stlen);
- tty->flip.char_buf_ptr += stlen;
- tty->flip.flag_buf_ptr += stlen;
- tty->flip.count += stlen;
-
+ tty_insert_flip_string(tty, (char *)(shbuf + tail), stlen);
len -= stlen;
tail += stlen;
if (tail >= size) {
@@ -2906,16 +2902,12 @@ static int stli_hostcmd(stlibrd_t *brdp, stliport_t *portp)
if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) {
if (tty != (struct tty_struct *) NULL) {
- if (tty->flip.count < TTY_FLIPBUF_SIZE) {
- tty->flip.count++;
- *tty->flip.flag_buf_ptr++ = TTY_BREAK;
- *tty->flip.char_buf_ptr++ = 0;
- if (portp->flags & ASYNC_SAK) {
- do_SAK(tty);
- EBRDENABLE(brdp);
- }
- tty_schedule_flip(tty);
+ tty_insert_flip_char(tty, 0, TTY_BREAK);
+ if (portp->flags & ASYNC_SAK) {
+ do_SAK(tty);
+ EBRDENABLE(brdp);
}
+ tty_schedule_flip(tty);
}
}
@@ -4940,7 +4932,7 @@ static int stli_portcmdstats(stliport_t *portp)
if (portp->tty != (struct tty_struct *) NULL) {
if (portp->tty->driver_data == portp) {
stli_comstats.ttystate = portp->tty->flags;
- stli_comstats.rxbuffered = portp->tty->flip.count;
+ stli_comstats.rxbuffered = -1 /*portp->tty->flip.count*/;
if (portp->tty->termios != (struct termios *) NULL) {
stli_comstats.cflags = portp->tty->termios->c_cflag;
stli_comstats.iflags = portp->tty->termios->c_iflag;
diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c
index 46a3a8ccd65f..5e3ef5522194 100644
--- a/drivers/char/moxa.c
+++ b/drivers/char/moxa.c
@@ -269,7 +269,7 @@ static int MoxaPortDCDChange(int);
static int MoxaPortDCDON(int);
static void MoxaPortFlushData(int, int);
static int MoxaPortWriteData(int, unsigned char *, int);
-static int MoxaPortReadData(int, unsigned char *, int);
+static int MoxaPortReadData(int, struct tty_struct *tty);
static int MoxaPortTxQueue(int);
static int MoxaPortRxQueue(int);
static int MoxaPortTxFree(int);
@@ -301,6 +301,8 @@ static struct tty_operations moxa_ops = {
.tiocmset = moxa_tiocmset,
};
+static spinlock_t moxa_lock = SPIN_LOCK_UNLOCKED;
+
#ifdef CONFIG_PCI
static int moxa_get_PCI_conf(struct pci_dev *p, int board_type, moxa_board_conf * board)
{
@@ -645,10 +647,10 @@ static int moxa_write(struct tty_struct *tty,
if (ch == NULL)
return (0);
port = ch->port;
- save_flags(flags);
- cli();
+
+ spin_lock_irqsave(&moxa_lock, flags);
len = MoxaPortWriteData(port, (unsigned char *) buf, count);
- restore_flags(flags);
+ spin_unlock_irqrestore(&moxa_lock, flags);
/*********************************************
if ( !(ch->statusflags & LOWWAIT) &&
@@ -723,11 +725,10 @@ static void moxa_put_char(struct tty_struct *tty, unsigned char c)
if (ch == NULL)
return;
port = ch->port;
- save_flags(flags);
- cli();
+ spin_lock_irqsave(&moxa_lock, flags);
moxaXmitBuff[0] = c;
MoxaPortWriteData(port, moxaXmitBuff, 1);
- restore_flags(flags);
+ spin_unlock_irqrestore(&moxa_lock, flags);
/************************************************
if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
*************************************************/
@@ -1030,12 +1031,12 @@ static int block_till_ready(struct tty_struct *tty, struct file *filp,
printk("block_til_ready before block: ttys%d, count = %d\n",
ch->line, ch->count);
#endif
- save_flags(flags);
- cli();
+ spin_lock_irqsave(&moxa_lock, flags);
if (!tty_hung_up_p(filp))
ch->count--;
- restore_flags(flags);
ch->blocked_open++;
+ spin_unlock_irqrestore(&moxa_lock, flags);
+
while (1) {
set_current_state(TASK_INTERRUPTIBLE);
if (tty_hung_up_p(filp) ||
@@ -1062,17 +1063,21 @@ static int block_till_ready(struct tty_struct *tty, struct file *filp,
}
set_current_state(TASK_RUNNING);
remove_wait_queue(&ch->open_wait, &wait);
+
+ spin_lock_irqsave(&moxa_lock, flags);
if (!tty_hung_up_p(filp))
ch->count++;
ch->blocked_open--;
+ spin_unlock_irqrestore(&moxa_lock, flags);
#ifdef SERIAL_DEBUG_OPEN
printk("block_til_ready after blocking: ttys%d, count = %d\n",
ch->line, ch->count);
#endif
if (retval)
return (retval);
+ /* FIXME: review to see if we need to use set_bit on these */
ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
- return (0);
+ return 0;
}
static void setup_empty_event(struct tty_struct *tty)
@@ -1080,15 +1085,14 @@ static void setup_empty_event(struct tty_struct *tty)
struct moxa_str *ch = tty->driver_data;
unsigned long flags;
- save_flags(flags);
- cli();
+ spin_lock_irqsave(&moxa_lock, flags);
ch->statusflags |= EMPTYWAIT;
moxaEmptyTimer_on[ch->port] = 0;
del_timer(&moxaEmptyTimer[ch->port]);
moxaEmptyTimer[ch->port].expires = jiffies + HZ;
moxaEmptyTimer_on[ch->port] = 1;
add_timer(&moxaEmptyTimer[ch->port]);
- restore_flags(flags);
+ spin_unlock_irqrestore(&moxa_lock, flags);
}
static void check_xmit_empty(unsigned long data)
@@ -1135,8 +1139,6 @@ static void receive_data(struct moxa_str *ch)
{
struct tty_struct *tp;
struct termios *ts;
- int i, count, rc, space;
- unsigned char *charptr, *flagptr;
unsigned long flags;
ts = NULL;
@@ -1150,24 +1152,10 @@ static void receive_data(struct moxa_str *ch)
MoxaPortFlushData(ch->port, 0);
return;
}
- space = TTY_FLIPBUF_SIZE - tp->flip.count;
- if (space <= 0)
- return;
- charptr = tp->flip.char_buf_ptr;
- flagptr = tp->flip.flag_buf_ptr;
- rc = tp->flip.count;
- save_flags(flags);
- cli();
- count = MoxaPortReadData(ch->port, charptr, space);
- restore_flags(flags);
- for (i = 0; i < count; i++)
- *flagptr++ = 0;
- charptr += count;
- rc += count;
- tp->flip.count = rc;
- tp->flip.char_buf_ptr = charptr;
- tp->flip.flag_buf_ptr = flagptr;
- tty_schedule_flip(ch->tty);
+ spin_lock_irqsave(&moxa_lock, flags);
+ MoxaPortReadData(ch->port, tp);
+ spin_unlock_irqrestore(&moxa_lock, flags);
+ tty_schedule_flip(tp);
}
#define Magic_code 0x404
@@ -1774,7 +1762,7 @@ int MoxaPortsOfCard(int cardno)
* 14. MoxaPortDCDON(int port); *
* 15. MoxaPortFlushData(int port, int mode); *
* 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
- * 17. MoxaPortReadData(int port, unsigned char * buffer, int length); *
+ * 17. MoxaPortReadData(int port, struct tty_struct *tty); *
* 18. MoxaPortTxBufSize(int port); *
* 19. MoxaPortRxBufSize(int port); *
* 20. MoxaPortTxQueue(int port); *
@@ -2003,10 +1991,9 @@ int MoxaPortsOfCard(int cardno)
*
* Function 21: Read data.
* Syntax:
- * int MoxaPortReadData(int port, unsigned char * buffer, int length);
+ * int MoxaPortReadData(int port, struct tty_struct *tty);
* int port : port number (0 - 127)
- * unsigned char * buffer : pointer to read data buffer.
- * int length : read data buffer length
+ * struct tty_struct *tty : tty for data
*
* return: 0 - length : real read data length
*
@@ -2504,7 +2491,7 @@ int MoxaPortWriteData(int port, unsigned char * buffer, int len)
return (total);
}
-int MoxaPortReadData(int port, unsigned char * buffer, int space)
+int MoxaPortReadData(int port, struct tty_struct *tty)
{
register ushort head, pageofs;
int i, count, cnt, len, total, remain;
@@ -2522,9 +2509,9 @@ int MoxaPortReadData(int port, unsigned char * buffer, int space)
count = (tail >= head) ? (tail - head)
: (tail - head + rx_mask + 1);
if (count == 0)
- return (0);
+ return 0;
- total = (space > count) ? count : space;
+ total = count;
remain = count - total;
moxaLog.rxcnt[port] += total;
count = total;
@@ -2539,7 +2526,7 @@ int MoxaPortReadData(int port, unsigned char * buffer, int space)
len = (count > len) ? len : count;
ofs = baseAddr + DynPage_addr + bufhead + head;
for (i = 0; i < len; i++)
- *buffer++ = readb(ofs + i);
+ tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
head = (head + len) & rx_mask;
count -= len;
}
@@ -2556,7 +2543,7 @@ int MoxaPortReadData(int port, unsigned char * buffer, int space)
writew(pageno, baseAddr + Control_reg);
ofs = baseAddr + DynPage_addr + pageofs;
for (i = 0; i < cnt; i++)
- *buffer++ = readb(ofs + i);
+ tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
if (count == 0) {
writew((head + len) & rx_mask, ofsAddr + RXrptr);
break;
diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c
index 51bb2a3cf8b3..ea725a9964e2 100644
--- a/drivers/char/mxser.c
+++ b/drivers/char/mxser.c
@@ -1982,7 +1982,7 @@ static void mxser_receive_chars(struct mxser_struct *info, int *status)
spin_lock_irqsave(&info->slock, flags);
- recv_room = tty->ldisc.receive_room(tty);
+ recv_room = tty->receive_room;
if ((recv_room == 0) && (!info->ldisc_stop_rx)) {
//mxser_throttle(tty);
mxser_stoprx(tty);
diff --git a/drivers/char/n_hdlc.c b/drivers/char/n_hdlc.c
index a133a62f3d55..70f487dd7b8d 100644
--- a/drivers/char/n_hdlc.c
+++ b/drivers/char/n_hdlc.c
@@ -212,7 +212,6 @@ static struct tty_ldisc n_hdlc_ldisc = {
.ioctl = n_hdlc_tty_ioctl,
.poll = n_hdlc_tty_poll,
.receive_buf = n_hdlc_tty_receive,
- .receive_room = n_hdlc_tty_room,
.write_wakeup = n_hdlc_tty_wakeup,
};
@@ -337,6 +336,7 @@ static int n_hdlc_tty_open (struct tty_struct *tty)
tty->disc_data = n_hdlc;
n_hdlc->tty = tty;
+ tty->receive_room = 65536;
#if defined(TTY_NO_WRITE_SPLIT)
/* change tty_io write() to not split large writes into 8K chunks */
@@ -478,22 +478,6 @@ static void n_hdlc_tty_wakeup(struct tty_struct *tty)
} /* end of n_hdlc_tty_wakeup() */
/**
- * n_hdlc_tty_room - Return the amount of space left in the receiver's buffer
- * @tty - pointer to associated tty instance data
- *
- * Callback function from tty driver. Return the amount of space left in the
- * receiver's buffer to decide if remote transmitter is to be throttled.
- */
-static int n_hdlc_tty_room(struct tty_struct *tty)
-{
- if (debuglevel >= DEBUG_LEVEL_INFO)
- printk("%s(%d)n_hdlc_tty_room() called\n",__FILE__,__LINE__);
- /* always return a larger number to prevent */
- /* throttling of remote transmitter. */
- return 65536;
-} /* end of n_hdlc_tty_root() */
-
-/**
* n_hdlc_tty_receive - Called by tty driver when receive data is available
* @tty - pointer to tty instance data
* @data - pointer to received data
diff --git a/drivers/char/n_r3964.c b/drivers/char/n_r3964.c
index 853c98cee64f..c48de09d68f0 100644
--- a/drivers/char/n_r3964.c
+++ b/drivers/char/n_r3964.c
@@ -147,7 +147,6 @@ static unsigned int r3964_poll(struct tty_struct * tty, struct file * file,
struct poll_table_struct *wait);
static void r3964_receive_buf(struct tty_struct *tty, const unsigned char *cp,
char *fp, int count);
-static int r3964_receive_room(struct tty_struct *tty);
static struct tty_ldisc tty_ldisc_N_R3964 = {
.owner = THIS_MODULE,
@@ -161,7 +160,6 @@ static struct tty_ldisc tty_ldisc_N_R3964 = {
.set_termios = r3964_set_termios,
.poll = r3964_poll,
.receive_buf = r3964_receive_buf,
- .receive_room = r3964_receive_room,
};
@@ -1119,6 +1117,7 @@ static int r3964_open(struct tty_struct *tty)
pInfo->nRetry = 0;
tty->disc_data = pInfo;
+ tty->receive_room = 65536;
init_timer(&pInfo->tmr);
pInfo->tmr.data = (unsigned long)pInfo;
@@ -1405,12 +1404,5 @@ static void r3964_receive_buf(struct tty_struct *tty, const unsigned char *cp,
}
}
-static int r3964_receive_room(struct tty_struct *tty)
-{
- TRACE_L("receive_room");
- return -1;
-}
-
-
MODULE_LICENSE("GPL");
MODULE_ALIAS_LDISC(N_R3964);
diff --git a/drivers/char/n_tty.c b/drivers/char/n_tty.c
index c556f4d3ccd7..ccad7ae94541 100644
--- a/drivers/char/n_tty.c
+++ b/drivers/char/n_tty.c
@@ -78,7 +78,32 @@ static inline void free_buf(unsigned char *buf)
free_page((unsigned long) buf);
}
-static inline void put_tty_queue_nolock(unsigned char c, struct tty_struct *tty)
+/**
+ * n_tty_set__room - receive space
+ * @tty: terminal
+ *
+ * Called by the driver to find out how much data it is
+ * permitted to feed to the line discipline without any being lost
+ * and thus to manage flow control. Not serialized. Answers for the
+ * "instant".
+ */
+
+static void n_tty_set_room(struct tty_struct *tty)
+{
+ int left = N_TTY_BUF_SIZE - tty->read_cnt - 1;
+
+ /*
+ * If we are doing input canonicalization, and there are no
+ * pending newlines, let characters through without limit, so
+ * that erase characters will be handled. Other excess
+ * characters will be beeped.
+ */
+ if (left <= 0)
+ left = tty->icanon && !tty->canon_data;
+ tty->receive_room = left;
+}
+
+static void put_tty_queue_nolock(unsigned char c, struct tty_struct *tty)
{
if (tty->read_cnt < N_TTY_BUF_SIZE) {
tty->read_buf[tty->read_head] = c;
@@ -87,7 +112,7 @@ static inline void put_tty_queue_nolock(unsigned char c, struct tty_struct *tty)
}
}
-static inline void put_tty_queue(unsigned char c, struct tty_struct *tty)
+static void put_tty_queue(unsigned char c, struct tty_struct *tty)
{
unsigned long flags;
/*
@@ -136,6 +161,7 @@ static void reset_buffer_flags(struct tty_struct *tty)
spin_unlock_irqrestore(&tty->read_lock, flags);
tty->canon_head = tty->canon_data = tty->erasing = 0;
memset(&tty->read_flags, 0, sizeof tty->read_flags);
+ n_tty_set_room(tty);
check_unthrottle(tty);
}
@@ -838,30 +864,6 @@ send_signal:
put_tty_queue(c, tty);
}
-/**
- * n_tty_receive_room - receive space
- * @tty: terminal
- *
- * Called by the driver to find out how much data it is
- * permitted to feed to the line discipline without any being lost
- * and thus to manage flow control. Not serialized. Answers for the
- * "instant".
- */
-
-static int n_tty_receive_room(struct tty_struct *tty)
-{
- int left = N_TTY_BUF_SIZE - tty->read_cnt - 1;
-
- /*
- * If we are doing input canonicalization, and there are no
- * pending newlines, let characters through without limit, so
- * that erase characters will be handled. Other excess
- * characters will be beeped.
- */
- if (left <= 0)
- left = tty->icanon && !tty->canon_data;
- return left;
-}
/**
* n_tty_write_wakeup - asynchronous I/O notifier
@@ -953,6 +955,8 @@ static void n_tty_receive_buf(struct tty_struct *tty, const unsigned char *cp,
tty->driver->flush_chars(tty);
}
+ n_tty_set_room(tty);
+
if (!tty->icanon && (tty->read_cnt >= tty->minimum_to_wake)) {
kill_fasync(&tty->fasync, SIGIO, POLL_IN);
if (waitqueue_active(&tty->read_wait))
@@ -964,7 +968,7 @@ static void n_tty_receive_buf(struct tty_struct *tty, const unsigned char *cp,
* mode. We don't want to throttle the driver if we're in
* canonical mode and don't have a newline yet!
*/
- if (n_tty_receive_room(tty) < TTY_THRESHOLD_THROTTLE) {
+ if (tty->receive_room < TTY_THRESHOLD_THROTTLE) {
/* check TTY_THROTTLED first so it indicates our state */
if (!test_and_set_bit(TTY_THROTTLED, &tty->flags) &&
tty->driver->throttle)
@@ -999,6 +1003,7 @@ static void n_tty_set_termios(struct tty_struct *tty, struct termios * old)
if (test_bit(TTY_HW_COOK_IN, &tty->flags)) {
tty->raw = 1;
tty->real_raw = 1;
+ n_tty_set_room(tty);
return;
}
if (I_ISTRIP(tty) || I_IUCLC(tty) || I_IGNCR(tty) ||
@@ -1051,6 +1056,7 @@ static void n_tty_set_termios(struct tty_struct *tty, struct termios * old)
else
tty->real_raw = 0;
}
+ n_tty_set_room(tty);
}
/**
@@ -1130,7 +1136,7 @@ static inline int input_available_p(struct tty_struct *tty, int amt)
*
*/
-static inline int copy_from_read_buf(struct tty_struct *tty,
+static int copy_from_read_buf(struct tty_struct *tty,
unsigned char __user **b,
size_t *nr)
@@ -1308,6 +1314,7 @@ do_it_again:
retval = -ERESTARTSYS;
break;
}
+ n_tty_set_room(tty);
clear_bit(TTY_DONT_FLIP, &tty->flags);
timeout = schedule_timeout(timeout);
set_bit(TTY_DONT_FLIP, &tty->flags);
@@ -1401,6 +1408,8 @@ do_it_again:
} else if (test_and_clear_bit(TTY_PUSH, &tty->flags))
goto do_it_again;
+ n_tty_set_room(tty);
+
return retval;
}
@@ -1553,7 +1562,6 @@ struct tty_ldisc tty_ldisc_N_TTY = {
normal_poll, /* poll */
NULL, /* hangup */
n_tty_receive_buf, /* receive_buf */
- n_tty_receive_room, /* receive_room */
n_tty_write_wakeup /* write_wakeup */
};
diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index 9fb10c9fec88..8a8ca32822ba 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -1007,8 +1007,9 @@ static void rx_ready_hdlc(MGSLPC_INFO *info, int eom)
static void rx_ready_async(MGSLPC_INFO *info, int tcd)
{
- unsigned char data, status;
+ unsigned char data, status, flag;
int fifo_count;
+ int work = 0;
struct tty_struct *tty = info->tty;
struct mgsl_icount *icount = &info->icount;
@@ -1023,20 +1024,16 @@ static void rx_ready_async(MGSLPC_INFO *info, int tcd)
fifo_count = 32;
} else
fifo_count = 32;
-
+
+ tty_buffer_request_room(tty, fifo_count);
/* Flush received async data to receive data buffer. */
while (fifo_count) {
data = read_reg(info, CHA + RXFIFO);
status = read_reg(info, CHA + RXFIFO);
fifo_count -= 2;
- if (tty->flip.count >= TTY_FLIPBUF_SIZE)
- break;
-
- *tty->flip.char_buf_ptr = data;
icount->rx++;
-
- *tty->flip.flag_buf_ptr = 0;
+ flag = TTY_NORMAL;
// if no frameing/crc error then save data
// BIT7:parity error
@@ -1055,26 +1052,23 @@ static void rx_ready_async(MGSLPC_INFO *info, int tcd)
status &= info->read_status_mask;
if (status & BIT7)
- *tty->flip.flag_buf_ptr = TTY_PARITY;
+ flag = TTY_PARITY;
else if (status & BIT6)
- *tty->flip.flag_buf_ptr = TTY_FRAME;
+ flag = TTY_FRAME;
}
-
- tty->flip.flag_buf_ptr++;
- tty->flip.char_buf_ptr++;
- tty->flip.count++;
+ work += tty_insert_flip_char(tty, data, flag);
}
issue_command(info, CHA, CMD_RXFIFO);
if (debug_level >= DEBUG_LEVEL_ISR) {
- printk("%s(%d):rx_ready_async count=%d\n",
- __FILE__,__LINE__,tty->flip.count);
+ printk("%s(%d):rx_ready_async",
+ __FILE__,__LINE__);
printk("%s(%d):rx=%d brk=%d parity=%d frame=%d overrun=%d\n",
__FILE__,__LINE__,icount->rx,icount->brk,
icount->parity,icount->frame,icount->overrun);
}
- if (tty->flip.count)
+ if (work)
tty_flip_buffer_push(tty);
}
diff --git a/drivers/char/pty.c b/drivers/char/pty.c
index 49f3997fd251..9b5a2c0e7008 100644
--- a/drivers/char/pty.c
+++ b/drivers/char/pty.c
@@ -111,7 +111,7 @@ static int pty_write(struct tty_struct * tty, const unsigned char *buf, int coun
if (!to || tty->stopped)
return 0;
- c = to->ldisc.receive_room(to);
+ c = to->receive_room;
if (c > count)
c = count;
to->ldisc.receive_buf(to, buf, NULL, c);
@@ -126,7 +126,7 @@ static int pty_write_room(struct tty_struct *tty)
if (!to || tty->stopped)
return 0;
- return to->ldisc.receive_room(to);
+ return to->receive_room;
}
/*
diff --git a/drivers/char/rio/riointr.c b/drivers/char/rio/riointr.c
index e42e7b50bf6b..ddda9c14e059 100644
--- a/drivers/char/rio/riointr.c
+++ b/drivers/char/rio/riointr.c
@@ -38,6 +38,7 @@ static char *_riointr_c_sccs_ = "@(#)riointr.c 1.2";
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/tty.h>
+#include <linux/tty_flip.h>
#include <asm/io.h>
#include <asm/system.h>
#include <asm/string.h>
@@ -560,6 +561,7 @@ struct Port * PortP;
struct PKT *PacketP;
register uint DataCnt;
uchar * ptr;
+ unsigned char *buf;
int copied =0;
static int intCount, RxIntCnt;
@@ -657,8 +659,7 @@ struct Port * PortP;
** and available space.
*/
- transCount = min_t(unsigned int, PacketP->len & PKT_LEN_MASK,
- TTY_FLIPBUF_SIZE - TtyP->flip.count);
+ transCount = tty_buffer_request_room(TtyP, PacketP->len & PKT_LEN_MASK);
rio_dprintk (RIO_DEBUG_REC, "port %d: Copy %d bytes\n",
PortP->PortNum, transCount);
/*
@@ -678,9 +679,8 @@ struct Port * PortP;
#endif
ptr = (uchar *) PacketP->data + PortP->RxDataStart;
- rio_memcpy_fromio (TtyP->flip.char_buf_ptr, ptr, transCount);
- memset(TtyP->flip.flag_buf_ptr, TTY_NORMAL, transCount);
-
+ tty_prepare_flip_string(TtyP, &buf, transCount);
+ rio_memcpy_fromio (buf, ptr, transCount);
#ifdef STATS
/*
** keep a count for statistical purposes
@@ -690,9 +690,6 @@ struct Port * PortP;
PortP->RxDataStart += transCount;
PacketP->len -= transCount;
copied += transCount;
- TtyP->flip.count += transCount;
- TtyP->flip.char_buf_ptr += transCount;
- TtyP->flip.flag_buf_ptr += transCount;
#ifdef ___DEBUG_IT___
diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c
index 5dae32521620..050e70ee5920 100644
--- a/drivers/char/riscom8.c
+++ b/drivers/char/riscom8.c
@@ -46,6 +46,7 @@
#include <linux/major.h>
#include <linux/init.h>
#include <linux/delay.h>
+#include <linux/tty_flip.h>
#include <asm/uaccess.h>
@@ -354,28 +355,17 @@ static inline void rc_receive_exc(struct riscom_board const * bp)
struct riscom_port *port;
struct tty_struct *tty;
unsigned char status;
- unsigned char ch;
+ unsigned char ch, flag;
if (!(port = rc_get_port(bp, "Receive")))
return;
tty = port->tty;
- if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
- printk(KERN_WARNING "rc%d: port %d: Working around flip "
- "buffer overflow.\n",
- board_No(bp), port_No(port));
- return;
- }
#ifdef RC_REPORT_OVERRUN
status = rc_in(bp, CD180_RCSR);
- if (status & RCSR_OE) {
+ if (status & RCSR_OE)
port->overrun++;
-#if 0
- printk(KERN_ERR "rc%d: port %d: Overrun. Total %ld overruns\n",
- board_No(bp), port_No(port), port->overrun);
-#endif
- }
status &= port->mark_mask;
#else
status = rc_in(bp, CD180_RCSR) & port->mark_mask;
@@ -393,25 +383,24 @@ static inline void rc_receive_exc(struct riscom_board const * bp)
} else if (status & RCSR_BREAK) {
printk(KERN_INFO "rc%d: port %d: Handling break...\n",
board_No(bp), port_No(port));
- *tty->flip.flag_buf_ptr++ = TTY_BREAK;
+ flag = TTY_BREAK;
if (port->flags & ASYNC_SAK)
do_SAK(tty);
} else if (status & RCSR_PE)
- *tty->flip.flag_buf_ptr++ = TTY_PARITY;
+ flag = TTY_PARITY;
else if (status & RCSR_FE)
- *tty->flip.flag_buf_ptr++ = TTY_FRAME;
+ flag = TTY_FRAME;
else if (status & RCSR_OE)
- *tty->flip.flag_buf_ptr++ = TTY_OVERRUN;
+ flag = TTY_OVERRUN;
else
- *tty->flip.flag_buf_ptr++ = 0;
+ flag = TTY_NORMAL;
- *tty->flip.char_buf_ptr++ = ch;
- tty->flip.count++;
- schedule_delayed_work(&tty->flip.work, 1);
+ tty_insert_flip_char(tty, ch, flag);
+ tty_flip_buffer_push(tty);
}
static inline void rc_receive(struct riscom_board const * bp)
@@ -432,17 +421,15 @@ static inline void rc_receive(struct riscom_board const * bp)
#endif
while (count--) {
- if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
+ if (tty_buffer_request_room(tty, 1) == 0) {
printk(KERN_WARNING "rc%d: port %d: Working around "
"flip buffer overflow.\n",
board_No(bp), port_No(port));
break;
}
- *tty->flip.char_buf_ptr++ = rc_in(bp, CD180_RDR);
- *tty->flip.flag_buf_ptr++ = 0;
- tty->flip.count++;
+ tty_insert_flip_char(tty, rc_in(bp, CD180_RDR), TTY_NORMAL);
}
- schedule_delayed_work(&tty->flip.work, 1);
+ tty_flip_buffer_push(tty);
}
static inline void rc_transmit(struct riscom_board const * bp)
diff --git a/drivers/char/rocket.c b/drivers/char/rocket.c
index d3bc731fbb27..0949dcef0697 100644
--- a/drivers/char/rocket.c
+++ b/drivers/char/rocket.c
@@ -325,19 +325,16 @@ static void rp_do_receive(struct r_port *info,
{
unsigned int CharNStat;
int ToRecv, wRecv, space = 0, count;
- unsigned char *cbuf;
- char *fbuf;
+ unsigned char *cbuf, *chead;
+ char *fbuf, *fhead;
struct tty_ldisc *ld;
ld = tty_ldisc_ref(tty);
ToRecv = sGetRxCnt(cp);
- if (ld)
- space = ld->receive_room(tty);
+ space = tty->receive_room;
if (space > 2 * TTY_FLIPBUF_SIZE)
space = 2 * TTY_FLIPBUF_SIZE;
- cbuf = tty->flip.char_buf;
- fbuf = tty->flip.flag_buf;
count = 0;
#ifdef ROCKET_DEBUG_INTR
printk(KERN_INFO "rp_do_receive(%d, %d)...", ToRecv, space);
@@ -350,9 +347,13 @@ static void rp_do_receive(struct r_port *info,
if (ToRecv > space)
ToRecv = space;
+ ToRecv = tty_prepare_flip_string_flags(tty, &chead, &fhead, ToRecv);
if (ToRecv <= 0)
goto done;
+ cbuf = chead;
+ fbuf = fhead;
+
/*
* if status indicates there are errored characters in the
* FIFO, then enter status mode (a word in FIFO holds
@@ -399,7 +400,7 @@ static void rp_do_receive(struct r_port *info,
else if (CharNStat & STMRCVROVRH)
*fbuf++ = TTY_OVERRUN;
else
- *fbuf++ = 0;
+ *fbuf++ = TTY_NORMAL;
*cbuf++ = CharNStat & 0xff;
count++;
ToRecv--;
@@ -426,13 +427,13 @@ static void rp_do_receive(struct r_port *info,
sInStrW(sGetTxRxDataIO(cp), (unsigned short *) cbuf, wRecv);
if (ToRecv & 1)
cbuf[ToRecv - 1] = sInB(sGetTxRxDataIO(cp));
- memset(fbuf, 0, ToRecv);
+ memset(fbuf, TTY_NORMAL, ToRecv);
cbuf += ToRecv;
fbuf += ToRecv;
count += ToRecv;
}
/* Push the data up to the tty layer */
- ld->receive_buf(tty, tty->flip.char_buf, tty->flip.flag_buf, count);
+ ld->receive_buf(tty, cbuf, fbuf, count);
done:
tty_ldisc_deref(ld);
}
diff --git a/drivers/char/selection.c b/drivers/char/selection.c
index 5b187c895c18..71093a9fc462 100644
--- a/drivers/char/selection.c
+++ b/drivers/char/selection.c
@@ -275,7 +275,8 @@ int set_selection(const struct tiocl_selection __user *sel, struct tty_struct *t
int paste_selection(struct tty_struct *tty)
{
struct vc_data *vc = (struct vc_data *)tty->driver_data;
- int pasted = 0, count;
+ int pasted = 0;
+ unsigned int count;
struct tty_ldisc *ld;
DECLARE_WAITQUEUE(wait, current);
@@ -293,7 +294,7 @@ int paste_selection(struct tty_struct *tty)
continue;
}
count = sel_buffer_lth - pasted;
- count = min(count, tty->ldisc.receive_room(tty));
+ count = min(count, tty->receive_room);
tty->ldisc.receive_buf(tty, sel_buffer + pasted, NULL, count);
pasted += count;
}
diff --git a/drivers/char/ser_a2232.c b/drivers/char/ser_a2232.c
index dda30e42ec79..80a5b840e22f 100644
--- a/drivers/char/ser_a2232.c
+++ b/drivers/char/ser_a2232.c
@@ -194,11 +194,6 @@ static inline void a2232_receive_char(struct a2232_port *port, int ch, int err)
*/
struct tty_struct *tty = port->gs.tty;
- if (tty->flip.count >= TTY_FLIPBUF_SIZE)
- return;
-
- tty->flip.count++;
-
#if 0
switch(err) {
case TTY_BREAK:
@@ -212,8 +207,7 @@ static inline void a2232_receive_char(struct a2232_port *port, int ch, int err)
}
#endif
- *tty->flip.flag_buf_ptr++ = err;
- *tty->flip.char_buf_ptr++ = ch;
+ tty_insert_flip_char(tty, ch, err);
tty_flip_buffer_push(tty);
}
diff --git a/drivers/char/serial167.c b/drivers/char/serial167.c
index a580748b92a1..f36342ae8e7e 100644
--- a/drivers/char/serial167.c
+++ b/drivers/char/serial167.c
@@ -422,45 +422,35 @@ cd2401_rxerr_interrupt(int irq, void *dev_id, struct pt_regs *fp)
base_addr[CyREOIR] = rfoc ? 0 : CyNOTRANS;
return IRQ_HANDLED;
}
- if (tty->flip.count < TTY_FLIPBUF_SIZE){
- tty->flip.count++;
+ if (tty_buffer_request_room(tty, 1) != 0){
if (err & info->read_status_mask){
if(err & CyBREAK){
- *tty->flip.flag_buf_ptr++ = TTY_BREAK;
- *tty->flip.char_buf_ptr++ = data;
+ tty_insert_flip_char(tty, data, TTY_BREAK);
if (info->flags & ASYNC_SAK){
do_SAK(tty);
}
}else if(err & CyFRAME){
- *tty->flip.flag_buf_ptr++ = TTY_FRAME;
- *tty->flip.char_buf_ptr++ = data;
+ tty_insert_flip_char(tty, data, TTY_FRAME);
}else if(err & CyPARITY){
- *tty->flip.flag_buf_ptr++ = TTY_PARITY;
- *tty->flip.char_buf_ptr++ = data;
+ tty_insert_flip_char(tty, data, TTY_PARITY);
}else if(err & CyOVERRUN){
- *tty->flip.flag_buf_ptr++ = TTY_OVERRUN;
- *tty->flip.char_buf_ptr++ = 0;
+ tty_insert_flip_char(tty, 0, TTY_OVERRUN);
/*
If the flip buffer itself is
overflowing, we still loose
the next incoming character.
*/
- if(tty->flip.count < TTY_FLIPBUF_SIZE){
- tty->flip.count++;
- *tty->flip.flag_buf_ptr++ = TTY_NORMAL;
- *tty->flip.char_buf_ptr++ = data;
- }
+ tty_insert_flip_char(tty, data, TTY_NORMAL);
+ }
/* These two conditions may imply */
/* a normal read should be done. */
/* else if(data & CyTIMEOUT) */
/* else if(data & CySPECHAR) */
}else{
- *tty->flip.flag_buf_ptr++ = 0;
- *tty->flip.char_buf_ptr++ = 0;
+ tty_insert_flip_char(tty, 0, TTY_NORMAL);
}
}else{
- *tty->flip.flag_buf_ptr++ = 0;
- *tty->flip.char_buf_ptr++ = 0;
+ tty_insert_flip_char(tty, data, TTY_NORMAL);
}
}else{
/* there was a software buffer overrun
@@ -692,12 +682,7 @@ cd2401_rx_interrupt(int irq, void *dev_id, struct pt_regs *fp)
#endif
while(char_count--){
data = base_addr[CyRDR];
- if (tty->flip.count >= TTY_FLIPBUF_SIZE){
- continue;
- }
- tty->flip.count++;
- *tty->flip.flag_buf_ptr++ = TTY_NORMAL;
- *tty->flip.char_buf_ptr++ = data;
+ tty_insert_flip_char(tty, data, TTY_NORMAL);
#ifdef CYCLOM_16Y_HACK
udelay(10L);
#endif
diff --git a/drivers/char/specialix.c b/drivers/char/specialix.c
index 0bbfce43031c..0a574bdbce36 100644
--- a/drivers/char/specialix.c
+++ b/drivers/char/specialix.c
@@ -85,6 +85,7 @@
#include <linux/interrupt.h>
#include <linux/errno.h>
#include <linux/tty.h>
+#include <linux/tty_flip.h>
#include <linux/mm.h>
#include <linux/serial.h>
#include <linux/fcntl.h>
@@ -665,7 +666,7 @@ static inline void sx_receive_exc(struct specialix_board * bp)
struct specialix_port *port;
struct tty_struct *tty;
unsigned char status;
- unsigned char ch;
+ unsigned char ch, flag;
func_enter();
@@ -676,8 +677,6 @@ static inline void sx_receive_exc(struct specialix_board * bp)
return;
}
tty = port->tty;
- dprintk (SX_DEBUG_RX, "port: %p count: %d BUFF_SIZE: %d\n",
- port, tty->flip.count, TTY_FLIPBUF_SIZE);
status = sx_in(bp, CD186x_RCSR);
@@ -691,7 +690,7 @@ static inline void sx_receive_exc(struct specialix_board * bp)
/* This flip buffer check needs to be below the reading of the
status register to reset the chip's IRQ.... */
- if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
+ if (tty_buffer_request_room(tty, 1) == 0) {
dprintk(SX_DEBUG_FIFO, "sx%d: port %d: Working around flip buffer overflow.\n",
board_No(bp), port_No(port));
func_exit();
@@ -712,26 +711,24 @@ static inline void sx_receive_exc(struct specialix_board * bp)
} else if (status & RCSR_BREAK) {
dprintk(SX_DEBUG_RX, "sx%d: port %d: Handling break...\n",
board_No(bp), port_No(port));
- *tty->flip.flag_buf_ptr++ = TTY_BREAK;
+ flag = TTY_BREAK;
if (port->flags & ASYNC_SAK)
do_SAK(tty);
} else if (status & RCSR_PE)
- *tty->flip.flag_buf_ptr++ = TTY_PARITY;
+ flag = TTY_PARITY;
else if (status & RCSR_FE)
- *tty->flip.flag_buf_ptr++ = TTY_FRAME;
+ flag = TTY_FRAME;
else if (status & RCSR_OE)
- *tty->flip.flag_buf_ptr++ = TTY_OVERRUN;
+ flag = TTY_OVERRUN;
else
- *tty->flip.flag_buf_ptr++ = 0;
-
- *tty->flip.char_buf_ptr++ = ch;
- tty->flip.count++;
- schedule_delayed_work(&tty->flip.work, 1);
+ flag = TTY_NORMAL;
+ if(tty_insert_flip_char(tty, ch, flag))
+ tty_flip_buffer_push(tty);
func_exit();
}
@@ -755,18 +752,11 @@ static inline void sx_receive(struct specialix_board * bp)
dprintk (SX_DEBUG_RX, "port: %p: count: %d\n", port, count);
port->hits[count > 8 ? 9 : count]++;
- while (count--) {
- if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
- printk(KERN_INFO "sx%d: port %d: Working around flip buffer overflow.\n",
- board_No(bp), port_No(port));
- break;
- }
- *tty->flip.char_buf_ptr++ = sx_in(bp, CD186x_RDR);
- *tty->flip.flag_buf_ptr++ = 0;
- tty->flip.count++;
- }
- schedule_delayed_work(&tty->flip.work, 1);
+ tty_buffer_request_room(tty, count);
+ while (count--)
+ tty_insert_flip_char(tty, sx_in(bp, CD186x_RDR), TTY_NORMAL);
+ tty_flip_buffer_push(tty);
func_exit();
}
diff --git a/drivers/char/stallion.c b/drivers/char/stallion.c
index acef2abf3f0d..0e20780d4a29 100644
--- a/drivers/char/stallion.c
+++ b/drivers/char/stallion.c
@@ -2901,7 +2901,8 @@ static int stl_getportstats(stlport_t *portp, comstats_t __user *cp)
if (portp->tty != (struct tty_struct *) NULL) {
if (portp->tty->driver_data == portp) {
portp->stats.ttystate = portp->tty->flags;
- portp->stats.rxbuffered = portp->tty->flip.count;
+ /* No longer available as a statistic */
+ portp->stats.rxbuffered = 1; /*portp->tty->flip.count; */
if (portp->tty->termios != (struct termios *) NULL) {
portp->stats.cflags = portp->tty->termios->c_cflag;
portp->stats.iflags = portp->tty->termios->c_iflag;
@@ -4045,9 +4046,7 @@ static void stl_cd1400rxisr(stlpanel_t *panelp, int ioaddr)
if ((ioack & ACK_TYPMASK) == ACK_TYPRXGOOD) {
outb((RDCR + portp->uartaddr), ioaddr);
len = inb(ioaddr + EREG_DATA);
- if ((tty == (struct tty_struct *) NULL) ||
- (tty->flip.char_buf_ptr == (char *) NULL) ||
- ((buflen = TTY_FLIPBUF_SIZE - tty->flip.count) == 0)) {
+ if (tty == NULL || (buflen = tty_buffer_request_room(tty, len)) == 0) {
len = MIN(len, sizeof(stl_unwanted));
outb((RDSR + portp->uartaddr), ioaddr);
insb((ioaddr + EREG_DATA), &stl_unwanted[0], len);
@@ -4056,12 +4055,10 @@ static void stl_cd1400rxisr(stlpanel_t *panelp, int ioaddr)
} else {
len = MIN(len, buflen);
if (len > 0) {
+ unsigned char *ptr;
outb((RDSR + portp->uartaddr), ioaddr);
- insb((ioaddr + EREG_DATA), tty->flip.char_buf_ptr, len);
- memset(tty->flip.flag_buf_ptr, 0, len);
- tty->flip.flag_buf_ptr += len;
- tty->flip.char_buf_ptr += len;
- tty->flip.count += len;
+ tty_prepare_flip_string(tty, &ptr, len);
+ insb((ioaddr + EREG_DATA), ptr, len);
tty_schedule_flip(tty);
portp->stats.rxtotal += len;
}
@@ -4085,8 +4082,7 @@ static void stl_cd1400rxisr(stlpanel_t *panelp, int ioaddr)
portp->stats.txxoff++;
goto stl_rxalldone;
}
- if ((tty != (struct tty_struct *) NULL) &&
- ((portp->rxignoremsk & status) == 0)) {
+ if (tty != NULL && (portp->rxignoremsk & status) == 0) {
if (portp->rxmarkmsk & status) {
if (status & ST_BREAK) {
status = TTY_BREAK;
@@ -4106,14 +4102,8 @@ static void stl_cd1400rxisr(stlpanel_t *panelp, int ioaddr)
} else {
status = 0;
}
- if (tty->flip.char_buf_ptr != (char *) NULL) {
- if (tty->flip.count < TTY_FLIPBUF_SIZE) {
- *tty->flip.flag_buf_ptr++ = status;
- *tty->flip.char_buf_ptr++ = ch;
- tty->flip.count++;
- }
- tty_schedule_flip(tty);
- }
+ tty_insert_flip_char(tty, ch, status);
+ tty_schedule_flip(tty);
}
} else {
printk("STALLION: bad RX interrupt ack value=%x\n", ioack);
@@ -5012,9 +5002,7 @@ static void stl_sc26198rxisr(stlport_t *portp, unsigned int iack)
len = inb(ioaddr + XP_DATA) + 1;
if ((iack & IVR_TYPEMASK) == IVR_RXDATA) {
- if ((tty == (struct tty_struct *) NULL) ||
- (tty->flip.char_buf_ptr == (char *) NULL) ||
- ((buflen = TTY_FLIPBUF_SIZE - tty->flip.count) == 0)) {
+ if (tty == NULL || (buflen = tty_buffer_request_room(tty, len)) == 0) {
len = MIN(len, sizeof(stl_unwanted));
outb(GRXFIFO, (ioaddr + XP_ADDR));
insb((ioaddr + XP_DATA), &stl_unwanted[0], len);
@@ -5023,12 +5011,10 @@ static void stl_sc26198rxisr(stlport_t *portp, unsigned int iack)
} else {
len = MIN(len, buflen);
if (len > 0) {
+ unsigned char *ptr;
outb(GRXFIFO, (ioaddr + XP_ADDR));
- insb((ioaddr + XP_DATA), tty->flip.char_buf_ptr, len);
- memset(tty->flip.flag_buf_ptr, 0, len);
- tty->flip.flag_buf_ptr += len;
- tty->flip.char_buf_ptr += len;
- tty->flip.count += len;
+ tty_prepare_flip_string(tty, &ptr, len);
+ insb((ioaddr + XP_DATA), ptr, len);
tty_schedule_flip(tty);
portp->stats.rxtotal += len;
}
@@ -5096,14 +5082,8 @@ static inline void stl_sc26198rxbadch(stlport_t *portp, unsigned char status, ch
status = 0;
}
- if (tty->flip.char_buf_ptr != (char *) NULL) {
- if (tty->flip.count < TTY_FLIPBUF_SIZE) {
- *tty->flip.flag_buf_ptr++ = status;
- *tty->flip.char_buf_ptr++ = ch;
- tty->flip.count++;
- }
- tty_schedule_flip(tty);
- }
+ tty_insert_flip_char(tty, ch, status);
+ tty_schedule_flip(tty);
if (status == 0)
portp->stats.rxtotal++;
diff --git a/drivers/char/sx.c b/drivers/char/sx.c
index 564f31778eb3..64bf89cb574f 100644
--- a/drivers/char/sx.c
+++ b/drivers/char/sx.c
@@ -1085,6 +1085,7 @@ static inline void sx_receive_chars (struct sx_port *port)
int rx_op;
struct tty_struct *tty;
int copied=0;
+ unsigned char *rp;
func_enter2 ();
tty = port->gs.tty;
@@ -1095,8 +1096,8 @@ static inline void sx_receive_chars (struct sx_port *port)
sx_dprintk (SX_DEBUG_RECEIVE, "rxop=%d, c = %d.\n", rx_op, c);
/* Don't copy more bytes than there is room for in the buffer */
- if (tty->flip.count + c > TTY_FLIPBUF_SIZE)
- c = TTY_FLIPBUF_SIZE - tty->flip.count;
+
+ c = tty_prepare_flip_string(tty, &rp, c);
sx_dprintk (SX_DEBUG_RECEIVE, "c = %d.\n", c);
@@ -1111,14 +1112,8 @@ static inline void sx_receive_chars (struct sx_port *port)
sx_dprintk (SX_DEBUG_RECEIVE , "Copying over %d chars. First is %d at %lx\n", c,
read_sx_byte (port->board, CHAN_OFFSET(port,hi_rxbuf) + rx_op),
CHAN_OFFSET(port, hi_rxbuf));
- memcpy_fromio (tty->flip.char_buf_ptr,
+ memcpy_fromio (rp,
port->board->base + CHAN_OFFSET(port,hi_rxbuf) + rx_op, c);
- memset(tty->flip.flag_buf_ptr, TTY_NORMAL, c);
-
- /* Update the kernel buffer end */
- tty->flip.count += c;
- tty->flip.char_buf_ptr += c;
- tty->flip.flag_buf_ptr += c;
/* This one last. ( Not essential.)
It allows the card to start putting more data into the buffer!
diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c
index 789572fc002b..9f1b466c4f84 100644
--- a/drivers/char/synclink.c
+++ b/drivers/char/synclink.c
@@ -1467,6 +1467,7 @@ static void mgsl_isr_receive_data( struct mgsl_struct *info )
{
int Fifocount;
u16 status;
+ int work = 0;
unsigned char DataByte;
struct tty_struct *tty = info->tty;
struct mgsl_icount *icount = &info->icount;
@@ -1487,6 +1488,8 @@ static void mgsl_isr_receive_data( struct mgsl_struct *info )
/* flush the receive FIFO */
while( (Fifocount = (usc_InReg(info,RICR) >> 8)) ) {
+ int flag;
+
/* read one byte from RxFIFO */
outw( (inw(info->io_base + CCAR) & 0x0780) | (RDR+LSBONLY),
info->io_base + CCAR );
@@ -1498,13 +1501,9 @@ static void mgsl_isr_receive_data( struct mgsl_struct *info )
RXSTATUS_OVERRUN + RXSTATUS_BREAK_RECEIVED) )
usc_UnlatchRxstatusBits(info,RXSTATUS_ALL);
- if (tty->flip.count >= TTY_FLIPBUF_SIZE)
- continue;
-
- *tty->flip.char_buf_ptr = DataByte;
icount->rx++;
- *tty->flip.flag_buf_ptr = 0;
+ flag = 0;
if ( status & (RXSTATUS_FRAMING_ERROR + RXSTATUS_PARITY_ERROR +
RXSTATUS_OVERRUN + RXSTATUS_BREAK_RECEIVED) ) {
printk("rxerr=%04X\n",status);
@@ -1530,41 +1529,31 @@ static void mgsl_isr_receive_data( struct mgsl_struct *info )
status &= info->read_status_mask;
if (status & RXSTATUS_BREAK_RECEIVED) {
- *tty->flip.flag_buf_ptr = TTY_BREAK;
+ flag = TTY_BREAK;
if (info->flags & ASYNC_SAK)
do_SAK(tty);
} else if (status & RXSTATUS_PARITY_ERROR)
- *tty->flip.flag_buf_ptr = TTY_PARITY;
+ flag = TTY_PARITY;
else if (status & RXSTATUS_FRAMING_ERROR)
- *tty->flip.flag_buf_ptr = TTY_FRAME;
- if (status & RXSTATUS_OVERRUN) {
- /* Overrun is special, since it's
- * reported immediately, and doesn't
- * affect the current character
- */
- if (tty->flip.count < TTY_FLIPBUF_SIZE) {
- tty->flip.count++;
- tty->flip.flag_buf_ptr++;
- tty->flip.char_buf_ptr++;
- *tty->flip.flag_buf_ptr = TTY_OVERRUN;
- }
- }
+ flag = TTY_FRAME;
} /* end of if (error) */
-
- tty->flip.flag_buf_ptr++;
- tty->flip.char_buf_ptr++;
- tty->flip.count++;
+ tty_insert_flip_char(tty, DataByte, flag);
+ if (status & RXSTATUS_OVERRUN) {
+ /* Overrun is special, since it's
+ * reported immediately, and doesn't
+ * affect the current character
+ */
+ work += tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ }
}
if ( debug_level >= DEBUG_LEVEL_ISR ) {
- printk("%s(%d):mgsl_isr_receive_data flip count=%d\n",
- __FILE__,__LINE__,tty->flip.count);
printk("%s(%d):rx=%d brk=%d parity=%d frame=%d overrun=%d\n",
__FILE__,__LINE__,icount->rx,icount->brk,
icount->parity,icount->frame,icount->overrun);
}
- if ( tty->flip.count )
+ if(work)
tty_flip_buffer_push(tty);
}
diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c
index 41759cd70a4f..79c81def4104 100644
--- a/drivers/char/synclink_gt.c
+++ b/drivers/char/synclink_gt.c
@@ -1749,6 +1749,9 @@ static void rx_async(struct slgt_info *info)
unsigned char status;
struct slgt_desc *bufs = info->rbufs;
int i, count;
+ int chars = 0;
+ int stat;
+ unsigned char ch;
start = end = info->rbuf_current;
@@ -1760,16 +1763,15 @@ static void rx_async(struct slgt_info *info)
DBGDATA(info, p, count, "rx");
for(i=0 ; i < count; i+=2, p+=2) {
- if (tty) {
- if (tty->flip.count >= TTY_FLIPBUF_SIZE)
- tty_flip_buffer_push(tty);
- if (tty->flip.count >= TTY_FLIPBUF_SIZE)
- break;
- *tty->flip.char_buf_ptr = *p;
- *tty->flip.flag_buf_ptr = 0;
+ if (tty && chars) {
+ tty_flip_buffer_push(tty);
+ chars = 0;
}
+ ch = *p;
icount->rx++;
+ stat = 0;
+
if ((status = *(p+1) & (BIT9 + BIT8))) {
if (status & BIT9)
icount->parity++;
@@ -1778,17 +1780,14 @@ static void rx_async(struct slgt_info *info)
/* discard char if tty control flags say so */
if (status & info->ignore_status_mask)
continue;
- if (tty) {
- if (status & BIT9)
- *tty->flip.flag_buf_ptr = TTY_PARITY;
- else if (status & BIT8)
- *tty->flip.flag_buf_ptr = TTY_FRAME;
- }
+ if (status & BIT9)
+ stat = TTY_PARITY;
+ else if (status & BIT8)
+ stat = TTY_FRAME;
}
if (tty) {
- tty->flip.flag_buf_ptr++;
- tty->flip.char_buf_ptr++;
- tty->flip.count++;
+ tty_insert_flip_char(tty, ch, stat);
+ chars++;
}
}
@@ -1811,7 +1810,7 @@ static void rx_async(struct slgt_info *info)
break;
}
- if (tty && tty->flip.count)
+ if (tty && chars)
tty_flip_buffer_push(tty);
}
@@ -2029,7 +2028,7 @@ static void isr_serial(struct slgt_info *info)
if (info->tty) {
if (!(status & info->ignore_status_mask)) {
if (info->read_status_mask & MASK_BREAK) {
- *info->tty->flip.flag_buf_ptr = TTY_BREAK;
+ tty_insert_flip_char(info->tty, 0, TTY_BREAK);
if (info->flags & ASYNC_SAK)
do_SAK(info->tty);
}
diff --git a/drivers/char/synclinkmp.c b/drivers/char/synclinkmp.c
index a9467e7d3747..960adb256fbb 100644
--- a/drivers/char/synclinkmp.c
+++ b/drivers/char/synclinkmp.c
@@ -2196,7 +2196,7 @@ void isr_rxint(SLMP_INFO * info)
if ( tty ) {
if (!(status & info->ignore_status_mask1)) {
if (info->read_status_mask1 & BRKD) {
- *tty->flip.flag_buf_ptr = TTY_BREAK;
+ tty_insert_flip_char(tty, 0, TTY_BREAK);
if (info->flags & ASYNC_SAK)
do_SAK(tty);
}
@@ -2240,16 +2240,10 @@ void isr_rxrdy(SLMP_INFO * info)
while((status = read_reg(info,CST0)) & BIT0)
{
+ int flag = 0;
+ int over = 0;
DataByte = read_reg(info,TRB);
- if ( tty ) {
- if (tty->flip.count >= TTY_FLIPBUF_SIZE)
- continue;
-
- *tty->flip.char_buf_ptr = DataByte;
- *tty->flip.flag_buf_ptr = 0;
- }
-
icount->rx++;
if ( status & (PE + FRME + OVRN) ) {
@@ -2272,42 +2266,34 @@ void isr_rxrdy(SLMP_INFO * info)
if ( tty ) {
if (status & PE)
- *tty->flip.flag_buf_ptr = TTY_PARITY;
+ flag = TTY_PARITY;
else if (status & FRME)
- *tty->flip.flag_buf_ptr = TTY_FRAME;
+ flag = TTY_FRAME;
if (status & OVRN) {
/* Overrun is special, since it's
* reported immediately, and doesn't
* affect the current character
*/
- if (tty->flip.count < TTY_FLIPBUF_SIZE) {
- tty->flip.count++;
- tty->flip.flag_buf_ptr++;
- tty->flip.char_buf_ptr++;
- *tty->flip.flag_buf_ptr = TTY_OVERRUN;
- }
+ over = 1;
}
}
} /* end of if (error) */
if ( tty ) {
- tty->flip.flag_buf_ptr++;
- tty->flip.char_buf_ptr++;
- tty->flip.count++;
+ tty_insert_flip_char(tty, DataByte, flag);
+ if (over)
+ tty_insert_flip_char(tty, 0, TTY_OVERRUN);
}
}
if ( debug_level >= DEBUG_LEVEL_ISR ) {
- printk("%s(%d):%s isr_rxrdy() flip count=%d\n",
- __FILE__,__LINE__,info->device_name,
- tty ? tty->flip.count : 0);
printk("%s(%d):%s rx=%d brk=%d parity=%d frame=%d overrun=%d\n",
__FILE__,__LINE__,info->device_name,
icount->rx,icount->brk,icount->parity,
icount->frame,icount->overrun);
}
- if ( tty && tty->flip.count )
+ if ( tty )
tty_flip_buffer_push(tty);
}
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index 4b1eef51ec59..1eda82b31a61 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -166,9 +166,12 @@ static struct tty_struct *alloc_tty_struct(void)
return tty;
}
+static void tty_buffer_free_all(struct tty_struct *);
+
static inline void free_tty_struct(struct tty_struct *tty)
{
kfree(tty->write_buf);
+ tty_buffer_free_all(tty);
kfree(tty);
}
@@ -231,6 +234,201 @@ static int check_tty_count(struct tty_struct *tty, const char *routine)
}
/*
+ * Tty buffer allocation management
+ */
+
+static void tty_buffer_free_all(struct tty_struct *tty)
+{
+ struct tty_buffer *thead;
+ while((thead = tty->buf.head) != NULL) {
+ tty->buf.head = thead->next;
+ kfree(thead);
+ }
+ while((thead = tty->buf.free) != NULL) {
+ tty->buf.free = thead->next;
+ kfree(thead);
+ }
+ tty->buf.tail = NULL;
+}
+
+static void tty_buffer_init(struct tty_struct *tty)
+{
+ tty->buf.head = NULL;
+ tty->buf.tail = NULL;
+ tty->buf.free = NULL;
+}
+
+static struct tty_buffer *tty_buffer_alloc(size_t size)
+{
+ struct tty_buffer *p = kmalloc(sizeof(struct tty_buffer) + 2 * size, GFP_ATOMIC);
+ if(p == NULL)
+ return NULL;
+ p->used = 0;
+ p->size = size;
+ p->next = NULL;
+ p->char_buf_ptr = (char *)(p->data);
+ p->flag_buf_ptr = (unsigned char *)p->char_buf_ptr + size;
+/* printk("Flip create %p\n", p); */
+ return p;
+}
+
+/* Must be called with the tty_read lock held. This needs to acquire strategy
+ code to decide if we should kfree or relink a given expired buffer */
+
+static void tty_buffer_free(struct tty_struct *tty, struct tty_buffer *b)
+{
+ /* Dumb strategy for now - should keep some stats */
+/* printk("Flip dispose %p\n", b); */
+ if(b->size >= 512)
+ kfree(b);
+ else {
+ b->next = tty->buf.free;
+ tty->buf.free = b;
+ }
+}
+
+static struct tty_buffer *tty_buffer_find(struct tty_struct *tty, size_t size)
+{
+ struct tty_buffer **tbh = &tty->buf.free;
+ while((*tbh) != NULL) {
+ struct tty_buffer *t = *tbh;
+ if(t->size >= size) {
+ *tbh = t->next;
+ t->next = NULL;
+ t->used = 0;
+ /* DEBUG ONLY */
+ memset(t->data, '*', size);
+/* printk("Flip recycle %p\n", t); */
+ return t;
+ }
+ tbh = &((*tbh)->next);
+ }
+ /* Round the buffer size out */
+ size = (size + 0xFF) & ~ 0xFF;
+ return tty_buffer_alloc(size);
+ /* Should possibly check if this fails for the largest buffer we
+ have queued and recycle that ? */
+}
+
+int tty_buffer_request_room(struct tty_struct *tty, size_t size)
+{
+ struct tty_buffer *b = tty->buf.head, *n;
+ int left = 0;
+
+ /* OPTIMISATION: We could keep a per tty "zero" sized buffer to
+ remove this conditional if its worth it. This would be invisible
+ to the callers */
+ if(b != NULL)
+ left = b->size - b->used;
+ if(left >= size)
+ return size;
+ /* This is the slow path - looking for new buffers to use */
+ n = tty_buffer_find(tty, size);
+ if(n == NULL)
+ return left;
+ n->next = b;
+ if(b != NULL)
+ b->next = n;
+ else
+ tty->buf.head = n;
+ tty->buf.tail = n;
+ return size;
+}
+
+EXPORT_SYMBOL_GPL(tty_buffer_request_room);
+
+int tty_insert_flip_string(struct tty_struct *tty, unsigned char *chars, size_t size)
+{
+ int copied = 0;
+ do {
+ int space = tty_buffer_request_room(tty, size - copied);
+ struct tty_buffer *tb = tty->buf.tail;
+ /* If there is no space then tb may be NULL */
+ if(unlikely(space == 0))
+ break;
+ memcpy(tb->char_buf_ptr + tb->used, chars, space);
+ memset(tb->flag_buf_ptr + tb->used, TTY_NORMAL, space);
+ tb->used += space;
+ copied += space;
+ chars += space;
+/* printk("Flip insert %d.\n", space); */
+ }
+ /* There is a small chance that we need to split the data over
+ several buffers. If this is the case we must loop */
+ while (unlikely(size > copied));
+ return copied;
+}
+
+EXPORT_SYMBOL_GPL(tty_insert_flip_string);
+
+int tty_insert_flip_string_flags(struct tty_struct *tty, unsigned char *chars, char *flags, size_t size)
+{
+ int copied = 0;
+ do {
+ int space = tty_buffer_request_room(tty, size - copied);
+ struct tty_buffer *tb = tty->buf.tail;
+ /* If there is no space then tb may be NULL */
+ if(unlikely(space == 0))
+ break;
+ memcpy(tb->char_buf_ptr + tb->used, chars, space);
+ memcpy(tb->flag_buf_ptr + tb->used, flags, space);
+ tb->used += space;
+ copied += space;
+ chars += space;
+ flags += space;
+ }
+ /* There is a small chance that we need to split the data over
+ several buffers. If this is the case we must loop */
+ while (unlikely(size > copied));
+ return copied;
+}
+
+EXPORT_SYMBOL_GPL(tty_insert_flip_string_flags);
+
+
+/*
+ * Prepare a block of space in the buffer for data. Returns the length
+ * available and buffer pointer to the space which is now allocated and
+ * accounted for as ready for normal characters. This is used for drivers
+ * that need their own block copy routines into the buffer. There is no
+ * guarantee the buffer is a DMA target!
+ */
+
+int tty_prepare_flip_string(struct tty_struct *tty, unsigned char **chars, size_t size)
+{
+ int space = tty_buffer_request_room(tty, size);
+ struct tty_buffer *tb = tty->buf.tail;
+ *chars = tb->char_buf_ptr + tb->used;
+ memset(tb->flag_buf_ptr + tb->used, TTY_NORMAL, space);
+ tb->used += space;
+ return space;
+}
+
+EXPORT_SYMBOL_GPL(tty_prepare_flip_string);
+
+/*
+ * Prepare a block of space in the buffer for data. Returns the length
+ * available and buffer pointer to the space which is now allocated and
+ * accounted for as ready for characters. This is used for drivers
+ * that need their own block copy routines into the buffer. There is no
+ * guarantee the buffer is a DMA target!
+ */
+
+int tty_prepare_flip_string_flags(struct tty_struct *tty, unsigned char **chars, char **flags, size_t size)
+{
+ int space = tty_buffer_request_room(tty, size);
+ struct tty_buffer *tb = tty->buf.tail;
+ *chars = tb->char_buf_ptr + tb->used;
+ *flags = tb->flag_buf_ptr + tb->used;
+ tb->used += space;
+ return space;
+}
+
+EXPORT_SYMBOL_GPL(tty_prepare_flip_string_flags);
+
+
+
+/*
* This is probably overkill for real world processors but
* they are not on hot paths so a little discipline won't do
* any harm.
@@ -492,6 +690,17 @@ restart:
if (ld == NULL)
return -EINVAL;
+ /*
+ * No more input please, we are switching. The new ldisc
+ * will update this value in the ldisc open function
+ */
+
+ tty->receive_room = 0;
+
+ /*
+ * Problem: What do we do if this blocks ?
+ */
+
tty_wait_until_sent(tty, 0);
if (tty->ldisc.num == ldisc) {
@@ -560,9 +769,9 @@ restart:
* we say so later on.
*/
- work = cancel_delayed_work(&tty->flip.work);
+ work = cancel_delayed_work(&tty->buf.work);
/*
- * Wait for ->hangup_work and ->flip.work handlers to terminate
+ * Wait for ->hangup_work and ->buf.work handlers to terminate
*/
flush_scheduled_work();
@@ -616,7 +825,7 @@ restart:
/* Restart it in case no characters kick it off. Safe if
already running */
if (work)
- schedule_delayed_work(&tty->flip.work, 1);
+ schedule_delayed_work(&tty->buf.work, 1);
return retval;
}
@@ -1721,10 +1930,10 @@ static void release_dev(struct file * filp)
*/
clear_bit(TTY_LDISC, &tty->flags);
clear_bit(TTY_DONT_FLIP, &tty->flags);
- cancel_delayed_work(&tty->flip.work);
+ cancel_delayed_work(&tty->buf.work);
/*
- * Wait for ->hangup_work and ->flip.work handlers to terminate
+ * Wait for ->hangup_work and ->buf.work handlers to terminate
*/
flush_scheduled_work();
@@ -2518,17 +2727,15 @@ EXPORT_SYMBOL(do_SAK);
/*
* This routine is called out of the software interrupt to flush data
- * from the flip buffer to the line discipline.
+ * from the buffer chain to the line discipline.
*/
static void flush_to_ldisc(void *private_)
{
struct tty_struct *tty = (struct tty_struct *) private_;
- unsigned char *cp;
- char *fp;
- int count;
unsigned long flags;
struct tty_ldisc *disc;
+ struct tty_buffer *tbuf;
disc = tty_ldisc_ref(tty);
if (disc == NULL) /* !TTY_LDISC */
@@ -2538,28 +2745,22 @@ static void flush_to_ldisc(void *private_)
/*
* Do it after the next timer tick:
*/
- schedule_delayed_work(&tty->flip.work, 1);
+ schedule_delayed_work(&tty->buf.work, 1);
goto out;
}
spin_lock_irqsave(&tty->read_lock, flags);
- if (tty->flip.buf_num) {
- cp = tty->flip.char_buf + TTY_FLIPBUF_SIZE;
- fp = tty->flip.flag_buf + TTY_FLIPBUF_SIZE;
- tty->flip.buf_num = 0;
- tty->flip.char_buf_ptr = tty->flip.char_buf;
- tty->flip.flag_buf_ptr = tty->flip.flag_buf;
- } else {
- cp = tty->flip.char_buf;
- fp = tty->flip.flag_buf;
- tty->flip.buf_num = 1;
- tty->flip.char_buf_ptr = tty->flip.char_buf + TTY_FLIPBUF_SIZE;
- tty->flip.flag_buf_ptr = tty->flip.flag_buf + TTY_FLIPBUF_SIZE;
- }
- count = tty->flip.count;
- tty->flip.count = 0;
+ while((tbuf = tty->buf.head) != NULL) {
+ tty->buf.head = tbuf->next;
+ spin_unlock_irqrestore(&tty->read_lock, flags);
+ /* printk("Process buffer %p for %d\n", tbuf, tbuf->used); */
+ disc->receive_buf(tty, tbuf->char_buf_ptr,
+ tbuf->flag_buf_ptr,
+ tbuf->used);
+ spin_lock_irqsave(&tty->read_lock, flags);
+ tty_buffer_free(tty, tbuf);
+ }
+ tty->buf.tail = NULL;
spin_unlock_irqrestore(&tty->read_lock, flags);
-
- disc->receive_buf(tty, cp, fp, count);
out:
tty_ldisc_deref(disc);
}
@@ -2654,11 +2855,12 @@ void tty_flip_buffer_push(struct tty_struct *tty)
if (tty->low_latency)
flush_to_ldisc((void *) tty);
else
- schedule_delayed_work(&tty->flip.work, 1);
+ schedule_delayed_work(&tty->buf.work, 1);
}
EXPORT_SYMBOL(tty_flip_buffer_push);
+
/*
* This subroutine initializes a tty structure.
*/
@@ -2669,10 +2871,10 @@ static void initialize_tty_struct(struct tty_struct *tty)
tty_ldisc_assign(tty, tty_ldisc_get(N_TTY));
tty->pgrp = -1;
tty->overrun_time = jiffies;
- tty->flip.char_buf_ptr = tty->flip.char_buf;
- tty->flip.flag_buf_ptr = tty->flip.flag_buf;
- INIT_WORK(&tty->flip.work, flush_to_ldisc, tty);
- init_MUTEX(&tty->flip.pty_sem);
+ tty->buf.head = tty->buf.tail = NULL;
+ tty_buffer_init(tty);
+ INIT_WORK(&tty->buf.work, flush_to_ldisc, tty);
+ init_MUTEX(&tty->buf.pty_sem);
init_MUTEX(&tty->termios_sem);
init_waitqueue_head(&tty->write_wait);
init_waitqueue_head(&tty->read_wait);
diff --git a/drivers/char/viocons.c b/drivers/char/viocons.c
index 4d75c261f98a..cb82ebf4cb07 100644
--- a/drivers/char/viocons.c
+++ b/drivers/char/viocons.c
@@ -993,11 +993,10 @@ static void vioHandleData(struct HvLpEvent *event)
* Don't attempt to copy more data into the buffer than we
* have room for because it would fail without indication.
*/
- if ((tty->flip.count + 1) > TTY_FLIPBUF_SIZE) {
+ if(tty_insert_flip_char(tty, cevent->data[index], TTY_NORMAL) == 0) {
printk(VIOCONS_KERN_WARN "input buffer overflow!\n");
break;
}
- tty_insert_flip_char(tty, cevent->data[index], TTY_NORMAL);
}
/* if cevent->len == 0 then no data was added to the buffer and flip.count == 0 */
diff --git a/drivers/char/vme_scc.c b/drivers/char/vme_scc.c
index 33e71e23b212..d9325281e482 100644
--- a/drivers/char/vme_scc.c
+++ b/drivers/char/vme_scc.c
@@ -434,13 +434,7 @@ static irqreturn_t scc_rx_int(int irq, void *data, struct pt_regs *fp)
SCCwrite_NB(COMMAND_REG, CR_HIGHEST_IUS_RESET);
return IRQ_HANDLED;
}
- if (tty->flip.count < TTY_FLIPBUF_SIZE) {
- *tty->flip.char_buf_ptr = ch;
- *tty->flip.flag_buf_ptr = 0;
- tty->flip.flag_buf_ptr++;
- tty->flip.char_buf_ptr++;
- tty->flip.count++;
- }
+ tty_insert_flip_char(tty, ch, 0);
/* Check if another character is already ready; in that case, the
* spcond_int() function must be used, because this character may have an
@@ -487,13 +481,7 @@ static irqreturn_t scc_spcond_int(int irq, void *data, struct pt_regs *fp)
else
err = 0;
- if (tty->flip.count < TTY_FLIPBUF_SIZE) {
- *tty->flip.char_buf_ptr = ch;
- *tty->flip.flag_buf_ptr = err;
- tty->flip.flag_buf_ptr++;
- tty->flip.char_buf_ptr++;
- tty->flip.count++;
- }
+ tty_insert_flip_char(tty, ch, err);
/* ++TeSche: *All* errors have to be cleared manually,
* else the condition persists for the next chars