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[SCSI] libsas: Clean up rphys/port dev list after a discovery error on an expander 

sas_get_port_device assigns a rphy to a domain device in anticipation
of finding a disk.  When a discovery error occurs in
sas_discover_{sata,sas,expander}*, however, we need to clean up that
rphy and the port device list so that we don't GPF.  In addition, we
need to check the result of the second sas_notify_lldd_dev_found.
This patch seems ok on a x260, x366 and x206m.

This patch fixes up sas_expander.c separately because jejb has some
cleanup patches of his own that are a prerequisite.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Darrick J. Wong 2007-01-11 14:14:52 -08:00 committed by James Bottomley
parent 8880839815
commit bf45120751
1 changed files with 16 additions and 4 deletions
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20
drivers/scsi/libsas/sas_expander.c
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@ -668,7 +668,6 @@ static struct domain_device *sas_ex_discover_end_dev(
out_list_del:
list_del(&child->dev_list_node);
sas_rphy_free(rphy);
out_free:
sas_port_delete(phy->port);
out_err:
@ -1431,13 +1430,26 @@ int sas_discover_root_expander(struct domain_device *dev)
int res;
struct sas_expander_device *ex = rphy_to_expander_device(dev->rphy);
sas_rphy_add(dev->rphy);
res = sas_rphy_add(dev->rphy);
if (res)
goto out_err;
ex->level = dev->port->disc.max_level; /* 0 */
res = sas_discover_expander(dev);
if (!res)
sas_ex_bfs_disc(dev->port);
if (res)
goto out_err2;
sas_ex_bfs_disc(dev->port);
return res;
out_err2:
sas_rphy_delete(dev->rphy);
dev->rphy = NULL;
return res;
out_err:
sas_rphy_free(dev->rphy);
dev->rphy = NULL;
return res;
}