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libsas: continue revalidation

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commit 26f2f199ff upstream.

Continue running revalidation until no more broadcast devices are
discovered.  Fixes cases where re-discovery completes too early in a
domain with multiple expanders with pending re-discovery events.
Servicing BCNs can get backed up behind error recovery.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
This commit is contained in:
Dan Williams
2012-06-21 23:36:15 -07:00
committed by Ben Hutchings
parent c6e92669dd
commit 705c1a5ba7
1 changed files with 4 additions and 4 deletions
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8
drivers/scsi/libsas/sas_expander.c
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@ -1983,9 +1983,7 @@ int sas_ex_revalidate_domain(struct domain_device *port_dev)
struct domain_device *dev = NULL;
res = sas_find_bcast_dev(port_dev, &dev);
if (res)
goto out;
if (dev) {
while (res == 0 && dev) {
struct expander_device *ex = &dev->ex_dev;
int i = 0, phy_id;
@ -1997,8 +1995,10 @@ int sas_ex_revalidate_domain(struct domain_device *port_dev)
res = sas_rediscover(dev, phy_id);
i = phy_id + 1;
} while (i < ex->num_phys);
dev = NULL;
res = sas_find_bcast_dev(port_dev, &dev);
}
out:
return res;
}