[SCSI] Allow error handling timeout to be specified

Introduce eh_timeout which can be used for error handling purposes. This
was previously hardcoded to 10 seconds in the SCSI error handling
code. However, for some fast-fail scenarios it is necessary to be able
to tune this as it can take several iterations (bus device, target, bus,
controller) before we give up.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

1 files changed, 3 insertions, 4 deletions

diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index f43de1e56420..562474499942 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -45,8 +45,6 @@
 
 static void scsi_eh_done(struct scsi_cmnd *scmd);
 
-#define SENSE_TIMEOUT           (10*HZ)
-
 /*
  * These should *probably* be handled by the host itself.
  * Since it is allowed to sleep, it probably should.
@@ -881,7 +879,7 @@ retry:
  */
 static int scsi_request_sense(struct scsi_cmnd *scmd)
 {
-        return scsi_send_eh_cmnd(scmd, NULL, 0, SENSE_TIMEOUT, ~0);
+        return scsi_send_eh_cmnd(scmd, NULL, 0, scmd->device->eh_timeout, ~0);
 }
 
 /**
@@ -982,7 +980,8 @@ static int scsi_eh_tur(struct scsi_cmnd *scmd)
         int retry_cnt = 1, rtn;
 
 retry_tur:
-        rtn = scsi_send_eh_cmnd(scmd, tur_command, 6, SENSE_TIMEOUT, 0);
+        rtn = scsi_send_eh_cmnd(scmd, tur_command, 6,
+                                scmd->device->eh_timeout, 0);
 
         SCSI_LOG_ERROR_RECOVERY(3, printk("%s: scmd %p rtn %x\n",
                 __func__, scmd, rtn));