src/patches/suse-2.6.27.31/patches.arch/s390-12-15-zfcp_abort_handler_for_completions_in_progress.patch

   1 From: Gerald Schaefer <geraldsc@de.ibm.com>
   2 Subject: zfcp: Fix abort handler for FSF requests in completion
   3 References: bnc#487755,LTC#52848
   4
   5 Symptom:     Kernel panic during FC switch port offline.
   6 Problem:     When the abort handler cannot find a pending FSF
   7              request, the request completion could just be running.
   8 Solution:    Return FAILED in such a case by the abort handler.
   9
  10 Acked-by: John Jolly <jjolly@suse.de>
  11 Index: linux-2.6.27.21-5.1.20090327_mz08/drivers/s390/scsi/zfcp_scsi.c
  12 ===================================================================
  13 --- linux-2.6.27.21-5.1.20090327_mz08.orig/drivers/s390/scsi/zfcp_scsi.c
  14 +++ linux-2.6.27.21-5.1.20090327_mz08/drivers/s390/scsi/zfcp_scsi.c
  15 @@ -175,7 +175,7 @@ static int zfcp_scsi_eh_abort_handler(st
  16         if (!fsf_req) {
  17                 write_unlock_irqrestore(&adapter->abort_lock, flags);
  18                 zfcp_scsi_dbf_event_abort("lte1", adapter, scpnt, NULL, 0);
  19 -               return retval;
  20 +               return FAILED; /* completion could be in progress */
  21         }
  22         fsf_req->data = NULL;
  23