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authorRoman Zippel <zippel@linux-m68k.org>2006-06-23 02:04:57 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-23 07:43:01 -0700
commit882905c7ff81763a3aa3413629f7253b75587cb1 (patch)
tree1425504c208f6c06a8817e376b113ae6360b12ef /drivers/scsi/wd33c93.c
parent5fa28ea42f28342ca6efaa2d23789f3fec5adff6 (diff)
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[PATCH] m68k: wd33c93: extra delay
The wd33c93 needs a small delay before a new command can be started. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Cc: James Bottomley <James.Bottomley@steeleye.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/scsi/wd33c93.c')
-rw-r--r--drivers/scsi/wd33c93.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/scsi/wd33c93.c b/drivers/scsi/wd33c93.c
index 9341703..27307fe 100644
--- a/drivers/scsi/wd33c93.c
+++ b/drivers/scsi/wd33c93.c
@@ -939,6 +939,7 @@ wd33c93_intr(struct Scsi_Host *instance)
DB(DB_INTR, printk("%02x", cmd->SCp.Status))
if (hostdata->level2 >= L2_BASIC) {
sr = read_wd33c93(regs, WD_SCSI_STATUS); /* clear interrupt */
+ udelay(7);
hostdata->state = S_RUNNING_LEVEL2;
write_wd33c93(regs, WD_COMMAND_PHASE, 0x50);
write_wd33c93_cmd(regs, WD_CMD_SEL_ATN_XFER);
@@ -955,6 +956,7 @@ wd33c93_intr(struct Scsi_Host *instance)
msg = read_1_byte(regs);
sr = read_wd33c93(regs, WD_SCSI_STATUS); /* clear interrupt */
+ udelay(7);
hostdata->incoming_msg[hostdata->incoming_ptr] = msg;
if (hostdata->incoming_msg[0] == EXTENDED_MESSAGE)
@@ -1358,6 +1360,7 @@ wd33c93_intr(struct Scsi_Host *instance)
} else {
/* Verify this is a change to MSG_IN and read the message */
sr = read_wd33c93(regs, WD_SCSI_STATUS);
+ udelay(7);
if (sr == (CSR_ABORT | PHS_MESS_IN) ||
sr == (CSR_UNEXP | PHS_MESS_IN) ||
sr == (CSR_SRV_REQ | PHS_MESS_IN)) {
@@ -1374,6 +1377,7 @@ wd33c93_intr(struct Scsi_Host *instance)
asr);
}
sr = read_wd33c93(regs, WD_SCSI_STATUS);
+ udelay(7);
if (sr != CSR_MSGIN)
printk
("wd33c93: Not paused with ACK on RESEL (%02x)\n",