diff options
Diffstat (limited to 'drivers/ata/libata-eh.c')
| -rw-r--r-- | drivers/ata/libata-eh.c | 112 |
1 files changed, 56 insertions, 56 deletions
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index 53b2348a364..dae2174f387 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -2065,16 +2065,19 @@ int ata_eh_reset(struct ata_link *link, int classify, ata_prereset_fn_t prereset, ata_reset_fn_t softreset, ata_reset_fn_t hardreset, ata_postreset_fn_t postreset) { + const int max_tries = ARRAY_SIZE(ata_eh_reset_timeouts); struct ata_port *ap = link->ap; struct ata_eh_context *ehc = &link->eh_context; unsigned int *classes = ehc->classes; + unsigned int lflags = link->flags; int verbose = !(ehc->i.flags & ATA_EHI_QUIET); int try = 0; struct ata_device *dev; - unsigned long deadline; + unsigned long deadline, now; unsigned int tmp_action; ata_reset_fn_t reset; unsigned long flags; + u32 sstatus; int rc; /* about to reset */ @@ -2106,7 +2109,7 @@ int ata_eh_reset(struct ata_link *link, int classify, /* Determine which reset to use and record in ehc->i.action. * prereset() may examine and modify it. */ - if (softreset && (!hardreset || (!(link->flags & ATA_LFLAG_NO_SRST) && + if (softreset && (!hardreset || (!(lflags & ATA_LFLAG_NO_SRST) && !sata_set_spd_needed(link) && !(ehc->i.action & ATA_EH_HARDRESET)))) tmp_action = ATA_EH_SOFTRESET; @@ -2188,7 +2191,7 @@ int ata_eh_reset(struct ata_link *link, int classify, rc = ata_do_reset(link, reset, classes, deadline); if (rc == 0 && classify && classes[0] == ATA_DEV_UNKNOWN && - !(link->flags & ATA_LFLAG_ASSUME_CLASS)) { + !(lflags & ATA_LFLAG_ASSUME_CLASS)) { ata_link_printk(link, KERN_ERR, "classification failed\n"); rc = -EINVAL; @@ -2196,67 +2199,42 @@ int ata_eh_reset(struct ata_link *link, int classify, } } - /* if we skipped follow-up srst, clear rc */ - if (rc == -EAGAIN) - rc = 0; - - if (rc && rc != -ERESTART && try < ARRAY_SIZE(ata_eh_reset_timeouts)) { - unsigned long now = jiffies; + /* -EAGAIN can happen if we skipped followup SRST */ + if (rc && rc != -EAGAIN) + goto fail; - if (time_before(now, deadline)) { - unsigned long delta = deadline - now; - - ata_link_printk(link, KERN_WARNING, "reset failed " - "(errno=%d), retrying in %u secs\n", - rc, (jiffies_to_msecs(delta) + 999) / 1000); + ata_link_for_each_dev(dev, link) { + /* After the reset, the device state is PIO 0 and the + * controller state is undefined. Reset also wakes up + * drives from sleeping mode. + */ + dev->pio_mode = XFER_PIO_0; + dev->flags &= ~ATA_DFLAG_SLEEPING; - while (delta) - delta = schedule_timeout_uninterruptible(delta); - } + if (ata_link_offline(link)) + continue; - if (rc == -EPIPE || - try == ARRAY_SIZE(ata_eh_reset_timeouts) - 1) - sata_down_spd_limit(link); - if (hardreset) - reset = hardreset; - goto retry; + /* apply class override and convert UNKNOWN to NONE */ + if (lflags & ATA_LFLAG_ASSUME_ATA) + classes[dev->devno] = ATA_DEV_ATA; + else if (lflags & ATA_LFLAG_ASSUME_SEMB) + classes[dev->devno] = ATA_DEV_SEMB_UNSUP; /* not yet */ + else if (classes[dev->devno] == ATA_DEV_UNKNOWN) + classes[dev->devno] = ATA_DEV_NONE; } - if (rc == 0) { - u32 sstatus; - - ata_link_for_each_dev(dev, link) { - /* After the reset, the device state is PIO 0 - * and the controller state is undefined. - * Reset also wakes up drives from sleeping - * mode. - */ - dev->pio_mode = XFER_PIO_0; - dev->flags &= ~ATA_DFLAG_SLEEPING; - - if (ata_link_offline(link)) - continue; - - /* apply class override and convert UNKNOWN to NONE */ - if (link->flags & ATA_LFLAG_ASSUME_ATA) - classes[dev->devno] = ATA_DEV_ATA; - else if (link->flags & ATA_LFLAG_ASSUME_SEMB) - classes[dev->devno] = ATA_DEV_SEMB_UNSUP; /* not yet */ - else if (classes[dev->devno] == ATA_DEV_UNKNOWN) - classes[dev->devno] = ATA_DEV_NONE; - } + /* record current link speed */ + if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0) + link->sata_spd = (sstatus >> 4) & 0xf; - /* record current link speed */ - if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0) - link->sata_spd = (sstatus >> 4) & 0xf; + if (postreset) + postreset(link, classes); - if (postreset) - postreset(link, classes); + /* reset successful, schedule revalidation */ + ata_eh_done(link, NULL, ehc->i.action & ATA_EH_RESET_MASK); + ehc->i.action |= ATA_EH_REVALIDATE; - /* reset successful, schedule revalidation */ - ata_eh_done(link, NULL, ehc->i.action & ATA_EH_RESET_MASK); - ehc->i.action |= ATA_EH_REVALIDATE; - } + rc = 0; out: /* clear hotplug flag */ ehc->i.flags &= ~ATA_EHI_HOTPLUGGED; @@ -2266,6 +2244,28 @@ int ata_eh_reset(struct ata_link *link, int classify, spin_unlock_irqrestore(ap->lock, flags); return rc; + + fail: + if (rc == -ERESTART || try >= max_tries) + goto out; + + now = jiffies; + if (time_before(now, deadline)) { + unsigned long delta = deadline - now; + + ata_link_printk(link, KERN_WARNING, "reset failed " + "(errno=%d), retrying in %u secs\n", + rc, (jiffies_to_msecs(delta) + 999) / 1000); + + while (delta) + delta = schedule_timeout_uninterruptible(delta); + } + + if (rc == -EPIPE || try == max_tries - 1) + sata_down_spd_limit(link); + if (hardreset) + reset = hardreset; + goto retry; } static int ata_eh_revalidate_and_attach(struct ata_link *link, |