[PATCH] scsi_scan: check return code from scsi_sysfs_add_sdev

Adds a missing check for an error return code from scsi_sysfs_add_sdev.
This resolves entry #4863 in the OSDL bugzilla.  Although in that bug
report the failure occurred because of a confusion over scanning vs.
rescanning, in general add_sdev can fail for a number of reasons (the
simplest being insufficient memory) and the caller should cope properly.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index ad3a5b142468..2d3c4ac475f2 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -756,7 +756,8 @@ static int scsi_add_lun(struct scsi_device *sdev, char *inq_result, int *bflags)
          * register it and tell the rest of the kernel
          * about it.
          */
-        scsi_sysfs_add_sdev(sdev);
+        if (scsi_sysfs_add_sdev(sdev) != 0)
+                return SCSI_SCAN_NO_RESPONSE;
 
         return SCSI_SCAN_LUN_PRESENT;
 }