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authorSwen Schillig <swen@vnet.ibm.com>2010-01-14 17:19:00 +0100
committerJames Bottomley <James.Bottomley@suse.de>2010-01-17 12:40:11 -0600
commitb8f08645f80a0c93246f3539ce53d3cae6a91fa0 (patch)
treea54e67374ca084562e62154708ff204ca19d13c7
parent9e2ab1fabdbd88669fdebd368fb5cda32ad5438d (diff)
[SCSI] scsi_transport_fc: Allow LLD to reset FC BSG timeout
The hardware used with zfcp cannot abort a currently pending CT or ELS request. Therefore we need the option to postpone the timeout triggered request abort within the fc layer, since there is nothing zfcp can do to stop the request at this point. Cc: James Smart <James.Smart@emulex.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
-rw-r--r--drivers/scsi/scsi_transport_fc.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index ddfcecd5099..653f22a8deb 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -3527,7 +3527,10 @@ fc_bsg_job_timeout(struct request *req)
if (!done && i->f->bsg_timeout) {
/* call LLDD to abort the i/o as it has timed out */
err = i->f->bsg_timeout(job);
- if (err)
+ if (err == -EAGAIN) {
+ job->ref_cnt--;
+ return BLK_EH_RESET_TIMER;
+ } else if (err)
printk(KERN_ERR "ERROR: FC BSG request timeout - LLD "
"abort failed with status %d\n", err);
}