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scsi: NCR5380: Unconditionally clear ICR after do_abort()

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When do_abort() succeeds, the target will go to BUS FREE phase and there
will be no connected command. Therefore, that function should clear the
Initiator Command Register before returning. It already does so in case of
NCR5380_poll_politely() failure; do the same for the other error case too,
that is, NCR5380_transfer_pio() failure.

Cc: Michael Schmitz <schmitzmic@gmail.com>
Cc: Ondrej Zary <linux@zary.sk>
Link: https://lore.kernel.org/r/4277b28ee2551f884aefa85965ef3c498344f301.1573875417.git.fthain@telegraphics.com.au
Reviewed-and-tested-by: Michael Schmitz <schmitzmic@gmail.com>
Tested-by: Ondrej Zary <linux@zary.sk>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Finn Thain 2019-11-16 14:36:57 +11:00 committed by Martin K. Petersen
parent 350767f20b
commit d04fc41af2
1 changed files with 8 additions and 8 deletions
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16
drivers/scsi/NCR5380.c
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@ -1392,7 +1392,7 @@ static void do_reset(struct Scsi_Host *instance)
* MESSAGE OUT phase and sending an ABORT message.
* @instance: relevant scsi host instance
*
* Returns 0 on success, -1 on failure.
* Returns 0 on success, negative error code on failure.
*/
static int do_abort(struct Scsi_Host *instance)
@ -1417,7 +1417,7 @@ static int do_abort(struct Scsi_Host *instance)
rc = NCR5380_poll_politely(hostdata, STATUS_REG, SR_REQ, SR_REQ, 10 * HZ);
if (rc < 0)
goto timeout;
goto out;
tmp = NCR5380_read(STATUS_REG) & PHASE_MASK;
@ -1428,7 +1428,7 @@ static int do_abort(struct Scsi_Host *instance)
ICR_BASE | ICR_ASSERT_ATN | ICR_ASSERT_ACK);
rc = NCR5380_poll_politely(hostdata, STATUS_REG, SR_REQ, 0, 3 * HZ);
if (rc < 0)
goto timeout;
goto out;
NCR5380_write(INITIATOR_COMMAND_REG, ICR_BASE | ICR_ASSERT_ATN);
}
@ -1437,17 +1437,17 @@ static int do_abort(struct Scsi_Host *instance)
len = 1;
phase = PHASE_MSGOUT;
NCR5380_transfer_pio(instance, &phase, &len, &msgptr);
if (len)
rc = -ENXIO;
/*
* If we got here, and the command completed successfully,
* we're about to go into bus free state.
*/
return len ? -1 : 0;
timeout:
out:
NCR5380_write(INITIATOR_COMMAND_REG, ICR_BASE);
return -1;
return rc;
}
/*
@ -2279,7 +2279,7 @@ static int NCR5380_abort(struct scsi_cmnd *cmd)
dsprintk(NDEBUG_ABORT, instance, "abort: cmd %p is connected\n", cmd);
hostdata->connected = NULL;
hostdata->dma_len = 0;
if (do_abort(instance)) {
if (do_abort(instance) < 0) {
set_host_byte(cmd, DID_ERROR);
complete_cmd(instance, cmd);
result = FAILED;