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authorTejun Heo <htejun@gmail.com>2006-03-31 20:41:11 +0900
committerJeff Garzik <jeff@garzik.org>2006-03-31 10:14:42 -0500
commit8e0e694a3a48212bfe29a9ad3cd592bf68dfec81 (patch)
tree82f2b114160c8f1a6537c471fea7b41e50a80814 /drivers/scsi
parente4a70e76add280db6068426716a9b2a74099144f (diff)
[PATCH] libata: make ata_qc_issue complete failed qcs
There is no reason for the issuer to diddle with a failed qc as the issuer has complete control over when a qc gets freed (usually in ->complete_fn). Make ata_qc_issue() responsible for completing qcs which failed to issue. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/libata-core.c20
-rw-r--r--drivers/scsi/libata-scsi.c8
-rw-r--r--drivers/scsi/libata.h2
3 files changed, 12 insertions, 18 deletions
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index eb4df01d9fa..63ae23b5c07 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -989,9 +989,7 @@ ata_exec_internal(struct ata_port *ap, struct ata_device *dev,
qc->private_data = &wait;
qc->complete_fn = ata_qc_complete_internal;
- qc->err_mask = ata_qc_issue(qc);
- if (qc->err_mask)
- ata_qc_complete(qc);
+ ata_qc_issue(qc);
spin_unlock_irqrestore(&ap->host_set->lock, flags);
@@ -3997,12 +3995,8 @@ static inline int ata_should_dma_map(struct ata_queued_cmd *qc)
*
* LOCKING:
* spin_lock_irqsave(host_set lock)
- *
- * RETURNS:
- * Zero on success, AC_ERR_* mask on failure
*/
-
-unsigned int ata_qc_issue(struct ata_queued_cmd *qc)
+void ata_qc_issue(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
@@ -4023,14 +4017,18 @@ unsigned int ata_qc_issue(struct ata_queued_cmd *qc)
ap->ops->qc_prep(qc);
- return ap->ops->qc_issue(qc);
+ qc->err_mask |= ap->ops->qc_issue(qc);
+ if (unlikely(qc->err_mask))
+ goto err;
+ return;
sg_err:
qc->flags &= ~ATA_QCFLAG_DMAMAP;
- return AC_ERR_SYSTEM;
+ qc->err_mask |= AC_ERR_SYSTEM;
+err:
+ ata_qc_complete(qc);
}
-
/**
* ata_qc_issue_prot - issue taskfile to device in proto-dependent manner
* @qc: command to issue to device
diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
index 628191bfd99..53f5b0d9161 100644
--- a/drivers/scsi/libata-scsi.c
+++ b/drivers/scsi/libata-scsi.c
@@ -1431,9 +1431,7 @@ static void ata_scsi_translate(struct ata_port *ap, struct ata_device *dev,
goto early_finish;
/* select device, send command to hardware */
- qc->err_mask = ata_qc_issue(qc);
- if (qc->err_mask)
- ata_qc_complete(qc);
+ ata_qc_issue(qc);
VPRINTK("EXIT\n");
return;
@@ -2199,9 +2197,7 @@ static void atapi_request_sense(struct ata_queued_cmd *qc)
qc->complete_fn = atapi_sense_complete;
- qc->err_mask = ata_qc_issue(qc);
- if (qc->err_mask)
- ata_qc_complete(qc);
+ ata_qc_issue(qc);
DPRINTK("EXIT\n");
}
diff --git a/drivers/scsi/libata.h b/drivers/scsi/libata.h
index 65f52beea88..1c755b14521 100644
--- a/drivers/scsi/libata.h
+++ b/drivers/scsi/libata.h
@@ -47,7 +47,7 @@ extern struct ata_queued_cmd *ata_qc_new_init(struct ata_port *ap,
extern int ata_rwcmd_protocol(struct ata_queued_cmd *qc);
extern void ata_port_flush_task(struct ata_port *ap);
extern void ata_qc_free(struct ata_queued_cmd *qc);
-extern unsigned int ata_qc_issue(struct ata_queued_cmd *qc);
+extern void ata_qc_issue(struct ata_queued_cmd *qc);
extern int ata_check_atapi_dma(struct ata_queued_cmd *qc);
extern void ata_dev_select(struct ata_port *ap, unsigned int device,
unsigned int wait, unsigned int can_sleep);