From: Tejun Heo <htejun@gmail.com>
To: jgarzik@pobox.com, alan@lxorguk.ukuu.org.uk, albertcc@tw.ibm.com,
linux-ide@vger.kernel.org
Cc: Tejun Heo <htejun@gmail.com>
Subject: [PATCH 13/15] libata: dec scmd->retries for qcs with zero err_mask
Date: Sun, 2 Apr 2006 18:51:53 +0900 [thread overview]
Message-ID: <11439715133421-git-send-email-htejun@gmail.com> (raw)
In-Reply-To: <11439715124131-git-send-email-htejun@gmail.com>
qcs might get retried because of unrelated failure. e.g. NCQ command
failure causes the whole command set to be aborted. Decrement
scmd->retries for such retrials to avoid unnecessarily failing
commands. Note that scmd->retries will be incremented the first time.
Signed-off-by: Tejun Heo <htejun@gmail.com>
---
drivers/scsi/libata-scsi.c | 7 +++++--
1 files changed, 5 insertions(+), 2 deletions(-)
942cb205645187842932b75aa89c4361a4423212
diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
index 2870652..4400815 100644
--- a/drivers/scsi/libata-scsi.c
+++ b/drivers/scsi/libata-scsi.c
@@ -831,11 +831,14 @@ void ata_eh_qc_complete(struct ata_queue
* should be retried. To be used from EH.
*
* SCSI midlayer limits the number of retries to scmd->allowed.
- * This function might need to adjust scmd->retries for commands
- * which get retried due to unrelated NCQ failures.
+ * scmd->retries is decremented 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--;
__ata_eh_qc_complete(qc);
}
--
1.2.4
next prev parent reply other threads:[~2006-04-02 9:52 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-02 9:51 [PATCHSET] libata: prep for new EH, take 2 Tejun Heo
2006-04-02 9:51 ` [PATCH 04/15] libata: clean up constants Tejun Heo
2006-04-02 9:51 ` [PATCH 01/15] libata: report device number when PIO fails Tejun Heo
2006-04-02 9:51 ` [PATCH 03/15] libata: ATA_FLAG_IN_EH is not used, kill it Tejun Heo
2006-04-02 9:51 ` [PATCH 02/15] libata: ata_dev_revalidate() printk update Tejun Heo
2006-04-02 9:51 ` [PATCH 05/15] libata: rename ATA_FLAG_PORT_DISABLED to ATA_FLAG_DISABLED Tejun Heo
2006-04-02 9:51 ` [PATCH 14/15] libata: separate out libata-eh.c Tejun Heo
2006-04-02 9:51 ` [PATCH 08/15] libata: add ATA_QCFLAG_IO Tejun Heo
2006-04-02 9:51 ` [PATCH 10/15] libata: always generate sense if qc->err_mask is non-zero Tejun Heo
2006-04-02 9:51 ` [PATCH 09/15] libata: pass qc around intead of ap during PIO Tejun Heo
2006-04-02 9:51 ` [PATCH 11/15] libata: don't read TF directly from sense generation functions Tejun Heo
2006-04-02 9:51 ` [PATCH 07/15] libata: clear ATA_DFLAG_PIO before setting it Tejun Heo
2006-04-02 9:51 ` Tejun Heo [this message]
2006-04-02 9:51 ` [PATCH 12/15] libata: add @cdb to ata_exec_internal() Tejun Heo
2006-04-02 9:51 ` [PATCH 15/15] libata: make some libata-core routines extern Tejun Heo
2006-04-02 9:51 ` [PATCH 06/15] libata: clear only affected flags during ata_dev_configure() Tejun Heo
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