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libata-pmp: propagate timeout to host link

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Timeout on downstream command may indicate transmission problem on
host link.  Propagate timeouts to host link.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2008-01-10 13:41:23 +09:00 committed by Jeff Garzik
parent 8048307dbc
commit 2695e36616
1 changed files with 15 additions and 5 deletions
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20
drivers/ata/libata-eh.c
View file

@ -1733,11 +1733,15 @@ static void ata_eh_link_autopsy(struct ata_link *link)
ehc->i.action &= ~ATA_EH_PERDEV_MASK;
}
/* consider speeding down */
/* propagate timeout to host link */
if ((all_err_mask & AC_ERR_TIMEOUT) && !ata_is_host_link(link))
ap->link.eh_context.i.err_mask |= AC_ERR_TIMEOUT;
/* record error and consider speeding down */
dev = ehc->i.dev;
if (!dev && ata_link_max_devices(link) == 1 &&
ata_dev_enabled(link->device))
dev = link->device;
if (!dev && ((ata_link_max_devices(link) == 1 &&
ata_dev_enabled(link->device))))
dev = link->device;
if (dev)
ehc->i.action |= ata_eh_speed_down(dev, is_io, all_err_mask);
@ -1759,8 +1763,14 @@ void ata_eh_autopsy(struct ata_port *ap)
{
struct ata_link *link;
__ata_port_for_each_link(link, ap)
ata_port_for_each_link(link, ap)
ata_eh_link_autopsy(link);
/* Autopsy of fanout ports can affect host link autopsy.
* Perform host link autopsy last.
*/
if (ap->nr_pmp_links)
ata_eh_link_autopsy(&ap->link);
}
/**