diff options
-rw-r--r-- | drivers/scsi/ahci.c | 57 | ||||
-rw-r--r-- | drivers/scsi/ata_piix.c | 1 | ||||
-rw-r--r-- | drivers/scsi/libata-core.c | 46 | ||||
-rw-r--r-- | drivers/scsi/libata-scsi.c | 44 | ||||
-rw-r--r-- | drivers/scsi/libata.h | 1 | ||||
-rw-r--r-- | drivers/scsi/pdc_adma.c | 1 | ||||
-rw-r--r-- | drivers/scsi/sata_mv.c | 10 | ||||
-rw-r--r-- | drivers/scsi/sata_nv.c | 1 | ||||
-rw-r--r-- | drivers/scsi/sata_promise.c | 10 | ||||
-rw-r--r-- | drivers/scsi/sata_qstor.c | 1 | ||||
-rw-r--r-- | drivers/scsi/sata_sil.c | 1 | ||||
-rw-r--r-- | drivers/scsi/sata_sil24.c | 6 | ||||
-rw-r--r-- | drivers/scsi/sata_sis.c | 1 | ||||
-rw-r--r-- | drivers/scsi/sata_svw.c | 1 | ||||
-rw-r--r-- | drivers/scsi/sata_sx4.c | 10 | ||||
-rw-r--r-- | drivers/scsi/sata_uli.c | 1 | ||||
-rw-r--r-- | drivers/scsi/sata_via.c | 1 | ||||
-rw-r--r-- | drivers/scsi/sata_vsc.c | 1 | ||||
-rw-r--r-- | include/linux/libata.h | 2 |
19 files changed, 113 insertions, 83 deletions
diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c index c840d5e..98ce6bb 100644 --- a/drivers/scsi/ahci.c +++ b/drivers/scsi/ahci.c @@ -206,6 +206,7 @@ static struct scsi_host_template ahci_sht = { .name = DRV_NAME, .ioctl = ata_scsi_ioctl, .queuecommand = ata_scsi_queuecmd, + .eh_timed_out = ata_scsi_timed_out, .eh_strategy_handler = ata_scsi_error, .can_queue = ATA_DEF_QUEUE, .this_id = ATA_SHT_THIS_ID, @@ -506,6 +507,15 @@ static unsigned int ahci_dev_classify(struct ata_port *ap) return ata_dev_classify(&tf); } +static void ahci_fill_cmd_slot(struct ata_port *ap, u32 opts) +{ + struct ahci_port_priv *pp = ap->private_data; + pp->cmd_slot[0].opts = cpu_to_le32(opts); + pp->cmd_slot[0].status = 0; + pp->cmd_slot[0].tbl_addr = cpu_to_le32(pp->cmd_tbl_dma & 0xffffffff); + pp->cmd_slot[0].tbl_addr_hi = cpu_to_le32((pp->cmd_tbl_dma >> 16) >> 16); +} + static void ahci_phy_reset(struct ata_port *ap) { void __iomem *port_mmio = (void __iomem *) ap->ioaddr.cmd_addr; @@ -584,42 +594,35 @@ static void ahci_qc_prep(struct ata_queued_cmd *qc) { struct ata_port *ap = qc->ap; struct ahci_port_priv *pp = ap->private_data; + int is_atapi = is_atapi_taskfile(&qc->tf); u32 opts; const u32 cmd_fis_len = 5; /* five dwords */ unsigned int n_elem; /* - * Fill in command slot information (currently only one slot, - * slot 0, is currently since we don't do queueing) - */ - - opts = cmd_fis_len; - if (qc->tf.flags & ATA_TFLAG_WRITE) - opts |= AHCI_CMD_WRITE; - if (is_atapi_taskfile(&qc->tf)) - opts |= AHCI_CMD_ATAPI; - - pp->cmd_slot[0].opts = cpu_to_le32(opts); - pp->cmd_slot[0].status = 0; - pp->cmd_slot[0].tbl_addr = cpu_to_le32(pp->cmd_tbl_dma & 0xffffffff); - pp->cmd_slot[0].tbl_addr_hi = cpu_to_le32((pp->cmd_tbl_dma >> 16) >> 16); - - /* * Fill in command table information. First, the header, * a SATA Register - Host to Device command FIS. */ ata_tf_to_fis(&qc->tf, pp->cmd_tbl, 0); - if (opts & AHCI_CMD_ATAPI) { + if (is_atapi) { memset(pp->cmd_tbl + AHCI_CMD_TBL_CDB, 0, 32); memcpy(pp->cmd_tbl + AHCI_CMD_TBL_CDB, qc->cdb, ap->cdb_len); } - if (!(qc->flags & ATA_QCFLAG_DMAMAP)) - return; + n_elem = 0; + if (qc->flags & ATA_QCFLAG_DMAMAP) + n_elem = ahci_fill_sg(qc); - n_elem = ahci_fill_sg(qc); + /* + * Fill in command slot information. + */ + opts = cmd_fis_len | n_elem << 16; + if (qc->tf.flags & ATA_TFLAG_WRITE) + opts |= AHCI_CMD_WRITE; + if (is_atapi) + opts |= AHCI_CMD_ATAPI; - pp->cmd_slot[0].opts |= cpu_to_le32(n_elem << 16); + ahci_fill_cmd_slot(ap, opts); } static void ahci_restart_port(struct ata_port *ap, u32 irq_stat) @@ -676,19 +679,13 @@ static void ahci_eng_timeout(struct ata_port *ap) 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/ata_piix.c b/drivers/scsi/ata_piix.c index 49cc420..4933ba2 100644 --- a/drivers/scsi/ata_piix.c +++ b/drivers/scsi/ata_piix.c @@ -180,6 +180,7 @@ static struct scsi_host_template piix_sht = { .name = DRV_NAME, .ioctl = ata_scsi_ioctl, .queuecommand = ata_scsi_queuecmd, + .eh_timed_out = ata_scsi_timed_out, .eh_strategy_handler = ata_scsi_error, .can_queue = ATA_DEF_QUEUE, .this_id = ATA_SHT_THIS_ID, diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c index 8e31d4b..592d3a8 100644 --- a/drivers/scsi/libata-core.c +++ b/drivers/scsi/libata-core.c @@ -3702,20 +3702,10 @@ static void ata_qc_timeout(struct ata_queued_cmd *qc) 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"); } @@ -3798,19 +3788,7 @@ void ata_qc_free(struct ata_queued_cmd *qc) } } -/** - * ata_qc_complete - Complete an active ATA command - * @qc: Command to complete - * @err_mask: ATA Status register contents - * - * Indicate to the mid and upper layers that an ATA - * command has completed, with either an ok or not-ok status. - * - * LOCKING: - * spin_lock_irqsave(host_set lock) - */ - -void ata_qc_complete(struct ata_queued_cmd *qc) +inline void __ata_qc_complete(struct ata_queued_cmd *qc) { assert(qc != NULL); /* ata_qc_from_tag _might_ return NULL */ assert(qc->flags & ATA_QCFLAG_ACTIVE); @@ -3828,6 +3806,25 @@ void ata_qc_complete(struct ata_queued_cmd *qc) qc->complete_fn(qc); } +/** + * ata_qc_complete - Complete an active ATA command + * @qc: Command to complete + * @err_mask: ATA Status register contents + * + * Indicate to the mid and upper layers that an ATA + * command has completed, with either an ok or not-ok status. + * + * LOCKING: + * spin_lock_irqsave(host_set lock) + */ +void ata_qc_complete(struct ata_queued_cmd *qc) +{ + if (unlikely(qc->flags & ATA_QCFLAG_EH_SCHEDULED)) + return; + + __ata_qc_complete(qc); +} + static inline int ata_should_dma_map(struct ata_queued_cmd *qc) { struct ata_port *ap = qc->ap; @@ -5183,6 +5180,7 @@ EXPORT_SYMBOL_GPL(ata_ratelimit); EXPORT_SYMBOL_GPL(ata_busy_sleep); EXPORT_SYMBOL_GPL(ata_scsi_ioctl); EXPORT_SYMBOL_GPL(ata_scsi_queuecmd); +EXPORT_SYMBOL_GPL(ata_scsi_timed_out); EXPORT_SYMBOL_GPL(ata_scsi_error); EXPORT_SYMBOL_GPL(ata_scsi_slave_config); EXPORT_SYMBOL_GPL(ata_scsi_release); diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c index b007bb4..9d67c67 100644 --- a/drivers/scsi/libata-scsi.c +++ b/drivers/scsi/libata-scsi.c @@ -717,6 +717,47 @@ int ata_scsi_slave_config(struct scsi_device *sdev) } /** + * ata_scsi_timed_out - SCSI layer time out callback + * @cmd: timed out SCSI command + * + * Handles SCSI layer timeout. We race with normal completion of + * the qc for @cmd. If the qc is already gone, we lose and let + * the scsi command finish (EH_HANDLED). Otherwise, the qc has + * timed out and EH should be invoked. Prevent ata_qc_complete() + * from finishing it by setting EH_SCHEDULED and return + * EH_NOT_HANDLED. + * + * LOCKING: + * Called from timer context + * + * RETURNS: + * EH_HANDLED or EH_NOT_HANDLED + */ +enum scsi_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd) +{ + struct Scsi_Host *host = cmd->device->host; + struct ata_port *ap = (struct ata_port *) &host->hostdata[0]; + unsigned long flags; + struct ata_queued_cmd *qc; + enum scsi_eh_timer_return ret = EH_HANDLED; + + DPRINTK("ENTER\n"); + + spin_lock_irqsave(&ap->host_set->lock, flags); + qc = ata_qc_from_tag(ap, ap->active_tag); + if (qc) { + assert(qc->scsicmd == cmd); + qc->flags |= ATA_QCFLAG_EH_SCHEDULED; + qc->err_mask |= AC_ERR_TIMEOUT; + ret = EH_NOT_HANDLED; + } + spin_unlock_irqrestore(&ap->host_set->lock, flags); + + DPRINTK("EXIT, ret=%d\n", ret); + return ret; +} + +/** * ata_scsi_error - SCSI layer error handler callback * @host: SCSI host on which error occurred * @@ -741,6 +782,7 @@ int ata_scsi_error(struct Scsi_Host *host) 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); @@ -770,7 +812,7 @@ static void __ata_eh_qc_complete(struct ata_queued_cmd *qc) spin_lock_irqsave(&ap->host_set->lock, flags); qc->scsidone = ata_eh_scsidone; - ata_qc_complete(qc); + __ata_qc_complete(qc); assert(!ata_tag_valid(qc->tag)); spin_unlock_irqrestore(&ap->host_set->lock, flags); diff --git a/drivers/scsi/libata.h b/drivers/scsi/libata.h index 9d76923..1cd071a 100644 --- a/drivers/scsi/libata.h +++ b/drivers/scsi/libata.h @@ -46,6 +46,7 @@ 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_qc_free(struct ata_queued_cmd *qc); extern unsigned int ata_qc_issue(struct ata_queued_cmd *qc); +extern void __ata_qc_complete(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); diff --git a/drivers/scsi/pdc_adma.c b/drivers/scsi/pdc_adma.c index 2dca6c5..0f7e45a 100644 --- a/drivers/scsi/pdc_adma.c +++ b/drivers/scsi/pdc_adma.c @@ -143,6 +143,7 @@ static struct scsi_host_template adma_ata_sht = { .name = DRV_NAME, .ioctl = ata_scsi_ioctl, .queuecommand = ata_scsi_queuecmd, + .eh_timed_out = ata_scsi_timed_out, .eh_strategy_handler = ata_scsi_error, .can_queue = ATA_DEF_QUEUE, .this_id = ATA_SHT_THIS_ID, diff --git a/drivers/scsi/sata_mv.c b/drivers/scsi/sata_mv.c index 5b36a23..cda4c49 100644 --- a/drivers/scsi/sata_mv.c +++ b/drivers/scsi/sata_mv.c @@ -378,6 +378,7 @@ static struct scsi_host_template mv_sht = { .name = DRV_NAME, .ioctl = ata_scsi_ioctl, .queuecommand = ata_scsi_queuecmd, + .eh_timed_out = ata_scsi_timed_out, .eh_strategy_handler = ata_scsi_error, .can_queue = MV_USE_Q_DEPTH, .this_id = ATA_SHT_THIS_ID, @@ -2025,13 +2026,8 @@ static void mv_eng_timeout(struct ata_port *ap) 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_nv.c b/drivers/scsi/sata_nv.c index 945194b..94dc2e1 100644 --- a/drivers/scsi/sata_nv.c +++ b/drivers/scsi/sata_nv.c @@ -229,6 +229,7 @@ static struct scsi_host_template nv_sht = { .name = DRV_NAME, .ioctl = ata_scsi_ioctl, .queuecommand = ata_scsi_queuecmd, + .eh_timed_out = ata_scsi_timed_out, .eh_strategy_handler = ata_scsi_error, .can_queue = ATA_DEF_QUEUE, .this_id = ATA_SHT_THIS_ID, diff --git a/drivers/scsi/sata_promise.c b/drivers/scsi/sata_promise.c index dcd1667..a88b563 100644 --- a/drivers/scsi/sata_promise.c +++ b/drivers/scsi/sata_promise.c @@ -112,6 +112,7 @@ static struct scsi_host_template pdc_ata_sht = { .name = DRV_NAME, .ioctl = ata_scsi_ioctl, .queuecommand = ata_scsi_queuecmd, + .eh_timed_out = ata_scsi_timed_out, .eh_strategy_handler = ata_scsi_error, .can_queue = ATA_DEF_QUEUE, .this_id = ATA_SHT_THIS_ID, @@ -432,11 +433,6 @@ static void pdc_eng_timeout(struct ata_port *ap) 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 +452,8 @@ static void pdc_eng_timeout(struct ata_port *ap) 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_qstor.c b/drivers/scsi/sata_qstor.c index b2f87da..d5c9127 100644 --- a/drivers/scsi/sata_qstor.c +++ b/drivers/scsi/sata_qstor.c @@ -132,6 +132,7 @@ static struct scsi_host_template qs_ata_sht = { .name = DRV_NAME, .ioctl = ata_scsi_ioctl, .queuecommand = ata_scsi_queuecmd, + .eh_timed_out = ata_scsi_timed_out, .eh_strategy_handler = ata_scsi_error, .can_queue = ATA_DEF_QUEUE, .this_id = ATA_SHT_THIS_ID, diff --git a/drivers/scsi/sata_sil.c b/drivers/scsi/sata_sil.c index 17f74d3..f40f25e 100644 --- a/drivers/scsi/sata_sil.c +++ b/drivers/scsi/sata_sil.c @@ -135,6 +135,7 @@ static struct scsi_host_template sil_sht = { .name = DRV_NAME, .ioctl = ata_scsi_ioctl, .queuecommand = ata_scsi_queuecmd, + .eh_timed_out = ata_scsi_timed_out, .eh_strategy_handler = ata_scsi_error, .can_queue = ATA_DEF_QUEUE, .this_id = ATA_SHT_THIS_ID, diff --git a/drivers/scsi/sata_sil24.c b/drivers/scsi/sata_sil24.c index 7222fc7..962396b 100644 --- a/drivers/scsi/sata_sil24.c +++ b/drivers/scsi/sata_sil24.c @@ -280,6 +280,7 @@ static struct scsi_host_template sil24_sht = { .name = DRV_NAME, .ioctl = ata_scsi_ioctl, .queuecommand = ata_scsi_queuecmd, + .eh_timed_out = ata_scsi_timed_out, .eh_strategy_handler = ata_scsi_error, .can_queue = ATA_DEF_QUEUE, .this_id = ATA_SHT_THIS_ID, @@ -638,11 +639,6 @@ static void sil24_eng_timeout(struct ata_port *ap) 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_sis.c b/drivers/scsi/sata_sis.c index 2df8c56..2f18157 100644 --- a/drivers/scsi/sata_sis.c +++ b/drivers/scsi/sata_sis.c @@ -87,6 +87,7 @@ static struct scsi_host_template sis_sht = { .name = DRV_NAME, .ioctl = ata_scsi_ioctl, .queuecommand = ata_scsi_queuecmd, + .eh_timed_out = ata_scsi_timed_out, .eh_strategy_handler = ata_scsi_error, .can_queue = ATA_DEF_QUEUE, .this_id = ATA_SHT_THIS_ID, diff --git a/drivers/scsi/sata_svw.c b/drivers/scsi/sata_svw.c index d847256..f369c30 100644 --- a/drivers/scsi/sata_svw.c +++ b/drivers/scsi/sata_svw.c @@ -288,6 +288,7 @@ static struct scsi_host_template k2_sata_sht = { .name = DRV_NAME, .ioctl = ata_scsi_ioctl, .queuecommand = ata_scsi_queuecmd, + .eh_timed_out = ata_scsi_timed_out, .eh_strategy_handler = ata_scsi_error, .can_queue = ATA_DEF_QUEUE, .this_id = ATA_SHT_THIS_ID, diff --git a/drivers/scsi/sata_sx4.c b/drivers/scsi/sata_sx4.c index c3975fa..b7cf279 100644 --- a/drivers/scsi/sata_sx4.c +++ b/drivers/scsi/sata_sx4.c @@ -182,6 +182,7 @@ static struct scsi_host_template pdc_sata_sht = { .name = DRV_NAME, .ioctl = ata_scsi_ioctl, .queuecommand = ata_scsi_queuecmd, + .eh_timed_out = ata_scsi_timed_out, .eh_strategy_handler = ata_scsi_error, .can_queue = ATA_DEF_QUEUE, .this_id = ATA_SHT_THIS_ID, @@ -866,11 +867,6 @@ static void pdc_eng_timeout(struct ata_port *ap) 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: @@ -889,10 +885,8 @@ static void pdc_eng_timeout(struct ata_port *ap) 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_uli.c b/drivers/scsi/sata_uli.c index 9635ca7..c500f24 100644 --- a/drivers/scsi/sata_uli.c +++ b/drivers/scsi/sata_uli.c @@ -75,6 +75,7 @@ static struct scsi_host_template uli_sht = { .name = DRV_NAME, .ioctl = ata_scsi_ioctl, .queuecommand = ata_scsi_queuecmd, + .eh_timed_out = ata_scsi_timed_out, .eh_strategy_handler = ata_scsi_error, .can_queue = ATA_DEF_QUEUE, .this_id = ATA_SHT_THIS_ID, diff --git a/drivers/scsi/sata_via.c b/drivers/scsi/sata_via.c index 6d5b0a7..2e20887 100644 --- a/drivers/scsi/sata_via.c +++ b/drivers/scsi/sata_via.c @@ -94,6 +94,7 @@ static struct scsi_host_template svia_sht = { .name = DRV_NAME, .ioctl = ata_scsi_ioctl, .queuecommand = ata_scsi_queuecmd, + .eh_timed_out = ata_scsi_timed_out, .eh_strategy_handler = ata_scsi_error, .can_queue = ATA_DEF_QUEUE, .this_id = ATA_SHT_THIS_ID, diff --git a/drivers/scsi/sata_vsc.c b/drivers/scsi/sata_vsc.c index 3e34fed..4cfc030 100644 --- a/drivers/scsi/sata_vsc.c +++ b/drivers/scsi/sata_vsc.c @@ -223,6 +223,7 @@ static struct scsi_host_template vsc_sata_sht = { .name = DRV_NAME, .ioctl = ata_scsi_ioctl, .queuecommand = ata_scsi_queuecmd, + .eh_timed_out = ata_scsi_timed_out, .eh_strategy_handler = ata_scsi_error, .can_queue = ATA_DEF_QUEUE, .this_id = ATA_SHT_THIS_ID, diff --git a/include/linux/libata.h b/include/linux/libata.h index 29c7819..b169f90 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -170,6 +170,7 @@ enum { ATA_QCFLAG_SG = (1 << 3), /* have s/g table? */ ATA_QCFLAG_SINGLE = (1 << 4), /* no s/g, just a single buffer */ ATA_QCFLAG_DMAMAP = ATA_QCFLAG_SG | ATA_QCFLAG_SINGLE, + ATA_QCFLAG_EH_SCHEDULED = (1 << 5), /* EH scheduled */ /* various lengths of time */ ATA_TMOUT_EDD = 5 * HZ, /* heuristic */ @@ -511,6 +512,7 @@ extern void ata_host_set_remove(struct ata_host_set *host_set); extern int ata_scsi_detect(struct scsi_host_template *sht); extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)); +extern enum scsi_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd); extern int ata_scsi_error(struct Scsi_Host *host); extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); |