From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: [PATCH 4/4] libata: kill NULL qc handling from ->eng_timeout callbacks Date: Fri, 10 Feb 2006 15:10:48 +0900 Message-ID: <11395518482651-git-send-email-htejun@gmail.com> References: <11395518482722-git-send-email-htejun@gmail.com> Reply-To: Tejun Heo Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Return-path: Received: from zproxy.gmail.com ([64.233.162.201]:51206 "EHLO zproxy.gmail.com") by vger.kernel.org with ESMTP id S1751159AbWBJGKx (ORCPT ); Fri, 10 Feb 2006 01:10:53 -0500 Received: by zproxy.gmail.com with SMTP id 13so360260nzn for ; Thu, 09 Feb 2006 22:10:52 -0800 (PST) In-Reply-To: <11395518482722-git-send-email-htejun@gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: jgarzik@pobox.com, albertcc@tw.ibm.com, linux-ide@vger.kernel.org Cc: Tejun Heo ->eng_timeout cannot be invoked with NULL qc anymore. Add an assertion in ata_scsi_error() and kill NULL qc handling from all ->eng_timeout callbacks. Signed-off-by: Tejun Heo --- drivers/scsi/ahci.c | 12 +++--------- drivers/scsi/libata-core.c | 12 +----------- drivers/scsi/libata-scsi.c | 1 + drivers/scsi/sata_mv.c | 9 ++------- drivers/scsi/sata_promise.c | 9 +-------- drivers/scsi/sata_sil24.c | 5 ----- drivers/scsi/sata_sx4.c | 9 +-------- 7 files changed, 9 insertions(+), 48 deletions(-) 51abbd79791f47e86ba59ab163498203f6eb0ca0 diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c index c67189a..fa01894 100644 --- a/drivers/scsi/ahci.c +++ b/drivers/scsi/ahci.c @@ -677,19 +677,13 @@ static void ahci_eng_timeout(struct ata_ spin_lock_irqsave(&host_set->lock, flags); + ahci_restart_port(ap, readl(port_mmio + PORT_IRQ_STAT)); qc = ata_qc_from_tag(ap, ap->active_tag); - if (!qc) { - printk(KERN_ERR "ata%u: BUG: timeout without command\n", - ap->id); - } else { - ahci_restart_port(ap, readl(port_mmio + PORT_IRQ_STAT)); - qc->err_mask |= AC_ERR_TIMEOUT; - } + qc->err_mask |= AC_ERR_TIMEOUT; spin_unlock_irqrestore(&host_set->lock, flags); - if (qc) - ata_eh_qc_complete(qc); + ata_eh_qc_complete(qc); } static inline int ahci_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc) diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c index d53e0bc..b938c7a 100644 --- a/drivers/scsi/libata-core.c +++ b/drivers/scsi/libata-core.c @@ -3524,20 +3524,10 @@ static void ata_qc_timeout(struct ata_qu void ata_eng_timeout(struct ata_port *ap) { - struct ata_queued_cmd *qc; - DPRINTK("ENTER\n"); - qc = ata_qc_from_tag(ap, ap->active_tag); - if (qc) - ata_qc_timeout(qc); - else { - printk(KERN_ERR "ata%u: BUG: timeout without command\n", - ap->id); - goto out; - } + ata_qc_timeout(ata_qc_from_tag(ap, ap->active_tag)); -out: DPRINTK("EXIT\n"); } diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c index d67cc2f..9d67c67 100644 --- a/drivers/scsi/libata-scsi.c +++ b/drivers/scsi/libata-scsi.c @@ -782,6 +782,7 @@ int ata_scsi_error(struct Scsi_Host *hos spin_lock_irqsave(&ap->host_set->lock, flags); assert(!(ap->flags & ATA_FLAG_IN_EH)); ap->flags |= ATA_FLAG_IN_EH; + assert(ata_qc_from_tag(ap, ap->active_tag) != NULL); spin_unlock_irqrestore(&ap->host_set->lock, flags); ap->ops->eng_timeout(ap); diff --git a/drivers/scsi/sata_mv.c b/drivers/scsi/sata_mv.c index 1db05f2..6c80527 100644 --- a/drivers/scsi/sata_mv.c +++ b/drivers/scsi/sata_mv.c @@ -2027,13 +2027,8 @@ static void mv_eng_timeout(struct ata_po mv_err_intr(ap); mv_stop_and_reset(ap); - if (!qc) { - printk(KERN_ERR "ata%u: BUG: timeout without command\n", - ap->id); - } else { - qc->err_mask |= AC_ERR_TIMEOUT; - ata_eh_qc_complete(qc); - } + qc->err_mask |= AC_ERR_TIMEOUT; + ata_eh_qc_complete(qc); } /** diff --git a/drivers/scsi/sata_promise.c b/drivers/scsi/sata_promise.c index 5d4ed54..c9dfd93 100644 --- a/drivers/scsi/sata_promise.c +++ b/drivers/scsi/sata_promise.c @@ -432,11 +432,6 @@ static void pdc_eng_timeout(struct ata_p spin_lock_irqsave(&host_set->lock, flags); qc = ata_qc_from_tag(ap, ap->active_tag); - if (!qc) { - printk(KERN_ERR "ata%u: BUG: timeout without command\n", - ap->id); - goto out; - } switch (qc->tf.protocol) { case ATA_PROT_DMA: @@ -456,10 +451,8 @@ static void pdc_eng_timeout(struct ata_p break; } -out: spin_unlock_irqrestore(&host_set->lock, flags); - if (qc) - ata_eh_qc_complete(qc); + ata_eh_qc_complete(qc); DPRINTK("EXIT\n"); } diff --git a/drivers/scsi/sata_sil24.c b/drivers/scsi/sata_sil24.c index f4742ad..962396b 100644 --- a/drivers/scsi/sata_sil24.c +++ b/drivers/scsi/sata_sil24.c @@ -639,11 +639,6 @@ static void sil24_eng_timeout(struct ata struct ata_queued_cmd *qc; qc = ata_qc_from_tag(ap, ap->active_tag); - if (!qc) { - printk(KERN_ERR "ata%u: BUG: timeout without command\n", - ap->id); - return; - } printk(KERN_ERR "ata%u: command timeout\n", ap->id); qc->err_mask |= AC_ERR_TIMEOUT; diff --git a/drivers/scsi/sata_sx4.c b/drivers/scsi/sata_sx4.c index 3319f03..212cff4 100644 --- a/drivers/scsi/sata_sx4.c +++ b/drivers/scsi/sata_sx4.c @@ -867,11 +867,6 @@ static void pdc_eng_timeout(struct ata_p spin_lock_irqsave(&host_set->lock, flags); qc = ata_qc_from_tag(ap, ap->active_tag); - if (!qc) { - printk(KERN_ERR "ata%u: BUG: timeout without command\n", - ap->id); - goto out; - } switch (qc->tf.protocol) { case ATA_PROT_DMA: @@ -890,10 +885,8 @@ static void pdc_eng_timeout(struct ata_p break; } -out: spin_unlock_irqrestore(&host_set->lock, flags); - if (qc) - ata_eh_qc_complete(qc); + ata_eh_qc_complete(qc); DPRINTK("EXIT\n"); } -- 1.1.5