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path: root/drivers/serial/8250.c
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Diffstat (limited to 'drivers/serial/8250.c')
-rw-r--r--drivers/serial/8250.c24
1 files changed, 13 insertions, 11 deletions
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 737b4c960971..c3e37c8e7e26 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -1339,14 +1339,12 @@ static void serial8250_start_tx(struct uart_port *port)
serial_out(up, UART_IER, up->ier);
if (up->bugs & UART_BUG_TXEN) {
- unsigned char lsr, iir;
+ unsigned char lsr;
lsr = serial_in(up, UART_LSR);
up->lsr_saved_flags |= lsr & LSR_SAVE_FLAGS;
- iir = serial_in(up, UART_IIR) & 0x0f;
if ((up->port.type == PORT_RM9000) ?
- (lsr & UART_LSR_THRE &&
- (iir == UART_IIR_NO_INT || iir == UART_IIR_THRI)) :
- (lsr & UART_LSR_TEMT && iir & UART_IIR_NO_INT))
+ (lsr & UART_LSR_THRE) :
+ (lsr & UART_LSR_TEMT))
transmit_chars(up);
}
}
@@ -2646,7 +2644,7 @@ static void __init serial8250_isa_init_ports(void)
{
struct uart_8250_port *up;
static int first = 1;
- int i;
+ int i, irqflag = 0;
if (!first)
return;
@@ -2670,6 +2668,9 @@ static void __init serial8250_isa_init_ports(void)
up->port.ops = &serial8250_pops;
}
+ if (share_irqs)
+ irqflag = IRQF_SHARED;
+
for (i = 0, up = serial8250_ports;
i < ARRAY_SIZE(old_serial_port) && i < nr_uarts;
i++, up++) {
@@ -2683,8 +2684,7 @@ static void __init serial8250_isa_init_ports(void)
up->port.iotype = old_serial_port[i].io_type;
up->port.regshift = old_serial_port[i].iomem_reg_shift;
set_io_from_upio(&up->port);
- if (share_irqs)
- up->port.irqflags |= IRQF_SHARED;
+ up->port.irqflags |= irqflag;
}
}
@@ -2940,10 +2940,13 @@ static int __devinit serial8250_probe(struct platform_device *dev)
{
struct plat_serial8250_port *p = dev->dev.platform_data;
struct uart_port port;
- int ret, i;
+ int ret, i, irqflag = 0;
memset(&port, 0, sizeof(struct uart_port));
+ if (share_irqs)
+ irqflag = IRQF_SHARED;
+
for (i = 0; p && p->flags != 0; p++, i++) {
port.iobase = p->iobase;
port.membase = p->membase;
@@ -2960,8 +2963,7 @@ static int __devinit serial8250_probe(struct platform_device *dev)
port.serial_in = p->serial_in;
port.serial_out = p->serial_out;
port.dev = &dev->dev;
- if (share_irqs)
- port.irqflags |= IRQF_SHARED;
+ port.irqflags |= irqflag;
ret = serial8250_register_port(&port);
if (ret < 0) {
dev_err(&dev->dev, "unable to register port at index %d "