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| author | Tejun Heo <htejun@gmail.com> | 2006-03-31 20:41:11 +0900 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2006-03-31 10:14:42 -0500 |
| commit | 8e0e694a3a48212bfe29a9ad3cd592bf68dfec81 (patch) | |
| tree | 82f2b114160c8f1a6537c471fea7b41e50a80814 /drivers/scsi/libata-core.c | |
| parent | e4a70e76add280db6068426716a9b2a74099144f (diff) | |
| download | lwn-8e0e694a3a48212bfe29a9ad3cd592bf68dfec81.tar.gz lwn-8e0e694a3a48212bfe29a9ad3cd592bf68dfec81.zip | |
[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/libata-core.c')
| -rw-r--r-- | drivers/scsi/libata-core.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c index eb4df01d9fa0..63ae23b5c078 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 |