diff options
| author | Tejun Heo | 2007-10-25 11:22:44 +0200 |
|---|---|---|
| committer | Jeff Garzik | 2007-10-29 11:15:25 +0100 |
| commit | 4dbfa39b6c95eb9d0aedb5bd00bb552b91c31e3d (patch) | |
| tree | b3b92aa44fe651af464373d8a21a3da8897fa479 /drivers/ata/libata-core.c | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6 (diff) | |
| download | kernel-qcow2-linux-4dbfa39b6c95eb9d0aedb5bd00bb552b91c31e3d.tar.gz kernel-qcow2-linux-4dbfa39b6c95eb9d0aedb5bd00bb552b91c31e3d.tar.xz kernel-qcow2-linux-4dbfa39b6c95eb9d0aedb5bd00bb552b91c31e3d.zip | |
libata: relocate and fix post-command processing
Some commands need post-processing after successful completion. This
was done in ata_scsi_qc_complete() till now but this has the following
problems.
* Post-command processing gets executed when qc is completed from EH.
Some qc's are retried from EH with zero err_mask and thus triggers
unnecessary/incorrect post-command processing.
* Command post processing doesn't belong to SAT layer.
* Link-wide revalidation was scheduled where device revalidation
suffices.
This patch moves post-command processing to success completion path of
ata_qc_complete() which is travelled iff the command is going to be
completed without passing through EH and updates post-command
processing such that device-specific action is used. While at it,
restructure code a bit for readability.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/ata/libata-core.c')
| -rw-r--r-- | drivers/ata/libata-core.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 081e3dfb64d4..5aedd1af06e6 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -5594,6 +5594,9 @@ void ata_qc_complete(struct ata_queued_cmd *qc) * taken care of. */ if (ap->ops->error_handler) { + struct ata_device *dev = qc->dev; + struct ata_eh_info *ehi = &dev->link->eh_info; + WARN_ON(ap->pflags & ATA_PFLAG_FROZEN); if (unlikely(qc->err_mask)) @@ -5612,6 +5615,23 @@ void ata_qc_complete(struct ata_queued_cmd *qc) if (qc->flags & ATA_QCFLAG_RESULT_TF) fill_result_tf(qc); + /* Some commands need post-processing after successful + * completion. + */ + switch (qc->tf.command) { + case ATA_CMD_SET_FEATURES: + if (qc->tf.feature != SETFEATURES_WC_ON && + qc->tf.feature != SETFEATURES_WC_OFF) + break; + /* fall through */ + case ATA_CMD_INIT_DEV_PARAMS: /* CHS translation changed */ + case ATA_CMD_SET_MULTI: /* multi_count changed */ + /* revalidate device */ + ehi->dev_action[dev->devno] |= ATA_EH_REVALIDATE; + ata_port_schedule_eh(ap); + break; + } + __ata_qc_complete(qc); } else { if (qc->flags & ATA_QCFLAG_EH_SCHEDULED) |