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libata: fix handling of port actions in per-dev action mask

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libata EH ignores port-wide actions in per-dev action mask.  However,
device resume requests EH_SOFTRESET using per-dev action mask.  Under
certain circumstances, this results in not resetting frozen port after
resuming which causes failure of all commands.

This patch allows port-wide actions to be requested in per-dev action
mask.  Before EH recovery starts, port-wide actions will be collected.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2007-01-18 17:22:18 +09:00 committed by Jeff Garzik
parent 501e0c5002
commit 79a55b72a1
1 changed files with 4 additions and 0 deletions
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4
drivers/ata/libata-eh.c
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@ -1979,6 +1979,10 @@ static int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
ehc->tries[dev->devno] = ATA_EH_DEV_TRIES;
/* collect port action mask recorded in dev actions */
ehc->i.action |= ehc->i.dev_action[i] & ~ATA_EH_PERDEV_MASK;
ehc->i.dev_action[i] &= ATA_EH_PERDEV_MASK;
/* process hotplug request */
if (dev->flags & ATA_DFLAG_DETACH)
ata_eh_detach_dev(dev);