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| author | Tejun Heo <htejun@gmail.com> | 2007-10-25 13:22:44 +0400 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-10-29 13:15:25 +0300 |
| commit | 4dbfa39b6c95eb9d0aedb5bd00bb552b91c31e3d (patch) | |
| tree | b3b92aa44fe651af464373d8a21a3da8897fa479 /drivers/ata/libata-scsi.c | |
| parent | 2a397e82c7db18019e408f953dd58dc1963a328c (diff) | |
| download | linux-4dbfa39b6c95eb9d0aedb5bd00bb552b91c31e3d.tar.xz | |
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-scsi.c')
| -rw-r--r-- | drivers/ata/libata-scsi.c | 23 |
1 files changed, 0 insertions, 23 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index f5d5420a1ba2..f752eddc19ed 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -1361,33 +1361,10 @@ nothing_to_do: static void ata_scsi_qc_complete(struct ata_queued_cmd *qc) { struct ata_port *ap = qc->ap; - struct ata_eh_info *ehi = &qc->dev->link->eh_info; struct scsi_cmnd *cmd = qc->scsicmd; u8 *cdb = cmd->cmnd; int need_sense = (qc->err_mask != 0); - /* We snoop the SET_FEATURES - Write Cache ON/OFF command, and - * schedule EH_REVALIDATE operation to update the IDENTIFY DEVICE - * cache - */ - if (ap->ops->error_handler && !need_sense) { - switch (qc->tf.command) { - case ATA_CMD_SET_FEATURES: - if ((qc->tf.feature == SETFEATURES_WC_ON) || - (qc->tf.feature == SETFEATURES_WC_OFF)) { - ehi->action |= ATA_EH_REVALIDATE; - ata_port_schedule_eh(ap); - } - break; - - case ATA_CMD_INIT_DEV_PARAMS: /* CHS translation changed */ - case ATA_CMD_SET_MULTI: /* multi_count changed */ - ehi->action |= ATA_EH_REVALIDATE; - ata_port_schedule_eh(ap); - break; - } - } - /* For ATA pass thru (SAT) commands, generate a sense block if * user mandated it or if there's an error. Note that if we * generate because the user forced us to, a check condition |