[SCSI] libsas: better error handling in sas_ex_discover_end_dev()

This replaces a few BUG_ON() statements with the correct failure error
handling.  There are still many more to do.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index 0746487..d05fc23 100644 (file)
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -670,8 +670,8 @@ static struct domain_device *sas_ex_discover_end_dev(
                       sizeof(struct dev_to_host_fis));
 
                rphy = sas_end_device_alloc(phy->port);
-               /* FIXME: error handling */
-               BUG_ON(!rphy);
+               if (unlikely(!rphy))
+                       goto out_free;
 
                sas_init_dev(child);