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-rw-r--r--drivers/scsi/NCR5380.c21
-rw-r--r--drivers/scsi/arm/cumana_1.c10
-rw-r--r--drivers/scsi/arm/oak.c4
-rw-r--r--drivers/scsi/atari_scsi.c3
4 files changed, 20 insertions, 18 deletions
diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c
index b3e5b6b57d83..e05cf505f0d4 100644
--- a/drivers/scsi/NCR5380.c
+++ b/drivers/scsi/NCR5380.c
@@ -1431,7 +1431,7 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance,
register unsigned char p = *phase;
register unsigned char *d = *data;
unsigned char tmp;
- int foo;
+ int result;
if ((tmp = (NCR5380_read(STATUS_REG) & PHASE_MASK)) != p) {
*phase = tmp;
@@ -1505,9 +1505,9 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance,
*/
if (p & SR_IO) {
- foo = NCR5380_dma_recv_setup(instance, d,
+ result = NCR5380_dma_recv_setup(instance, d,
hostdata->flags & FLAG_DMA_FIXUP ? c - 1 : c);
- if (!foo && (hostdata->flags & FLAG_DMA_FIXUP)) {
+ if (!result && (hostdata->flags & FLAG_DMA_FIXUP)) {
/*
* The workaround was to transfer fewer bytes than we
* intended to with the pseudo-DMA read function, wait for
@@ -1525,19 +1525,19 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance,
if (NCR5380_poll_politely(instance, BUS_AND_STATUS_REG,
BASR_DRQ, BASR_DRQ, HZ) < 0) {
- foo = -1;
+ result = -1;
shost_printk(KERN_ERR, instance, "PDMA read: DRQ timeout\n");
}
if (NCR5380_poll_politely(instance, STATUS_REG,
SR_REQ, 0, HZ) < 0) {
- foo = -1;
+ result = -1;
shost_printk(KERN_ERR, instance, "PDMA read: !REQ timeout\n");
}
d[c - 1] = NCR5380_read(INPUT_DATA_REG);
}
} else {
- foo = NCR5380_dma_send_setup(instance, d, c);
- if (!foo && (hostdata->flags & FLAG_DMA_FIXUP)) {
+ result = NCR5380_dma_send_setup(instance, d, c);
+ if (!result && (hostdata->flags & FLAG_DMA_FIXUP)) {
/*
* Wait for the last byte to be sent. If REQ is being asserted for
* the byte we're interested, we'll ACK it and it will go false.
@@ -1545,7 +1545,7 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance,
if (NCR5380_poll_politely2(instance,
BUS_AND_STATUS_REG, BASR_DRQ, BASR_DRQ,
BUS_AND_STATUS_REG, BASR_PHASE_MATCH, 0, HZ) < 0) {
- foo = -1;
+ result = -1;
shost_printk(KERN_ERR, instance, "PDMA write: DRQ and phase timeout\n");
}
}
@@ -1555,8 +1555,7 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance,
NCR5380_read(RESET_PARITY_INTERRUPT_REG);
*data = d + c;
*count = 0;
- *phase = NCR5380_read(STATUS_REG) & PHASE_MASK;
- return foo;
+ return result;
}
/*
@@ -1652,7 +1651,7 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
if (!cmd->device->borken)
transfersize = NCR5380_dma_xfer_len(instance, cmd, phase);
- if (transfersize) {
+ if (transfersize > 0) {
len = transfersize;
if (NCR5380_transfer_dma(instance, &phase,
&len, (unsigned char **)&cmd->SCp.ptr)) {
diff --git a/drivers/scsi/arm/cumana_1.c b/drivers/scsi/arm/cumana_1.c
index 7bcb66893059..402d984aa088 100644
--- a/drivers/scsi/arm/cumana_1.c
+++ b/drivers/scsi/arm/cumana_1.c
@@ -101,7 +101,10 @@ static inline int cumanascsi_pwrite(struct Scsi_Host *host,
}
end:
writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL);
- return len;
+
+ if (len)
+ return -1;
+ return 0;
}
static inline int cumanascsi_pread(struct Scsi_Host *host,
@@ -163,7 +166,10 @@ static inline int cumanascsi_pread(struct Scsi_Host *host,
}
end:
writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL);
- return len;
+
+ if (len)
+ return -1;
+ return 0;
}
static unsigned char cumanascsi_read(struct Scsi_Host *host, unsigned int reg)
diff --git a/drivers/scsi/arm/oak.c b/drivers/scsi/arm/oak.c
index 5d6e0e590638..05cf874fc739 100644
--- a/drivers/scsi/arm/oak.c
+++ b/drivers/scsi/arm/oak.c
@@ -47,13 +47,13 @@ static inline int oakscsi_pwrite(struct Scsi_Host *instance,
void __iomem *base = priv(instance)->base;
printk("writing %p len %d\n",addr, len);
- if(!len) return -1;
while(1)
{
int status;
while (((status = readw(base + STAT)) & 0x100)==0);
}
+ return 0;
}
static inline int oakscsi_pread(struct Scsi_Host *instance,
@@ -74,7 +74,7 @@ printk("reading %p len %d\n", addr, len);
if(status & 0x200 || !timeout)
{
printk("status = %08X\n", status);
- return 1;
+ return -1;
}
}
diff --git a/drivers/scsi/atari_scsi.c b/drivers/scsi/atari_scsi.c
index 41ddd95cebe6..5a81cec79a59 100644
--- a/drivers/scsi/atari_scsi.c
+++ b/drivers/scsi/atari_scsi.c
@@ -527,9 +527,6 @@ static unsigned long atari_scsi_dma_setup(struct Scsi_Host *instance,
*/
dma_cache_maintenance(addr, count, dir);
- if (count == 0)
- printk(KERN_NOTICE "SCSI warning: DMA programmed for 0 bytes !\n");
-
if (IS_A_TT()) {
tt_scsi_dma.dma_ctrl = dir;
SCSI_DMA_WRITE_P(dma_addr, addr);