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| author | Roman Zippel <zippel@linux-m68k.org> | 2006-06-23 02:04:57 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-23 07:43:01 -0700 |
| commit | 882905c7ff81763a3aa3413629f7253b75587cb1 (patch) | |
| tree | 1425504c208f6c06a8817e376b113ae6360b12ef /drivers/scsi/wd33c93.c | |
| parent | 5fa28ea42f28342ca6efaa2d23789f3fec5adff6 (diff) | |
| download | lwn-882905c7ff81763a3aa3413629f7253b75587cb1.tar.gz lwn-882905c7ff81763a3aa3413629f7253b75587cb1.zip | |
[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.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/scsi/wd33c93.c b/drivers/scsi/wd33c93.c index 9341703dee00..27307fe5a4c8 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", |