diff options
| author | Gwendal Grignou <gwendal@google.com> | 2009-08-08 03:17:49 +0400 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2013-10-07 23:18:25 +0400 |
| commit | f13e220161e738c2710b9904dcb3cf8bb0bcce61 (patch) | |
| tree | 5bc78b57686a1f700a94bfd5052d466acd37d727 /drivers/ata | |
| parent | 0fed4c09dca6820adaee28e55cd4283e74d029cd (diff) | |
| download | linux-f13e220161e738c2710b9904dcb3cf8bb0bcce61.tar.xz | |
libata: make ata_eh_qc_retry() bump scmd->allowed on bogus failures
libata EH decrements scmd->retries when the command failed for reasons
unrelated to the command itself so that, for example, commands aborted
due to suspend / resume cycle don't get penalized; however,
decrementing scmd->retries isn't enough for ATA passthrough commands.
Without this fix, ATA passthrough commands are not resend to the
drive, and no error is signalled to the caller because:
- allowed retry count is 1
- ata_eh_qc_complete fill the sense data, so result is valid
- sense data is filled with untouched ATA registers.
Signed-off-by: Gwendal Grignou <gwendal@google.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/libata-eh.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index c69fcce505c0..370462fa8e01 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -1322,14 +1322,14 @@ void ata_eh_qc_complete(struct ata_queued_cmd *qc) * should be retried. To be used from EH. * * SCSI midlayer limits the number of retries to scmd->allowed. - * scmd->retries is decremented for commands which get retried + * scmd->allowed is incremented for commands which get retried * due to unrelated failures (qc->err_mask is zero). */ void ata_eh_qc_retry(struct ata_queued_cmd *qc) { struct scsi_cmnd *scmd = qc->scsicmd; - if (!qc->err_mask && scmd->retries) - scmd->retries--; + if (!qc->err_mask) + scmd->allowed++; __ata_eh_qc_complete(qc); } |