[PATCH] Fix a bug in scsi_get_command

scsi_get_command() attempts to write into a structure that may not have
been successfully allocated.  Move this write inside the if statement that
ensures we won't panic the kernel with a NULL pointer dereference.
Signed-off-by: NMatthew Dobson <colpatch@us.ibm.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

drivers/scsi/scsi.c

@@ -265,10 +265,10 @@ struct scsi_cmnd *scsi_get_command(struct scsi_device *dev, gfp_t gfp_mask)
 		spin_lock_irqsave(&dev->list_lock, flags);
 		list_add_tail(&cmd->list, &dev->cmd_list);
 		spin_unlock_irqrestore(&dev->list_lock, flags);
+		cmd->jiffies_at_alloc = jiffies;
 	} else
 		put_device(&dev->sdev_gendev);
 
-	cmd->jiffies_at_alloc = jiffies;
 	return cmd;
 }				
 EXPORT_SYMBOL(scsi_get_command);