From 8e0e694a3a48212bfe29a9ad3cd592bf68dfec81 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 31 Mar 2006 20:41:11 +0900 Subject: [PATCH] [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 Signed-off-by: Jeff Garzik --- drivers/scsi/libata-core.c | 20 +++++++++----------- drivers/scsi/libata-scsi.c | 8 ++------ drivers/scsi/libata.h | 2 +- 3 files changed, 12 insertions(+), 18 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 diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c index 628191bfd990..53f5b0d9161c 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 65f52beea884..1c755b14521a 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); -- GitLab