[SCSI] use sysfs configured timeout for EH Start Unit timeout

Use the sysfs configurable timeout when issuing a START_UNIT
command from the scsi error handler. This is needed for devices which
take longer than thirty seconds to respond to the start
unit. The problem was observed when sending a start unit
to a disk array device in an ipr RAID adapter, which results
in the adapter firmware sending potentially multiple commands
to physical devices as a result of this command, which ended
up timing out sometimes. This patch does not change the default
value used for this command.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 3963e7013bd90eca80df51c268427a4f3107af32..e8350c562d24c0a4598d7a4c0e4066c1b4911d35 100644 (file)
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -38,7 +38,6 @@
 #include "scsi_logging.h"
 
 #define SENSE_TIMEOUT          (10*HZ)
-#define START_UNIT_TIMEOUT     (30*HZ)
 
 /*
  * These should *probably* be handled by the host itself.
@@ -936,7 +935,7 @@ static int scsi_eh_try_stu(struct scsi_cmnd *scmd)
 
                for (i = 0; rtn == NEEDS_RETRY && i < 2; i++)
                        rtn = scsi_send_eh_cmnd(scmd, stu_command, 6,
-                                               START_UNIT_TIMEOUT, 0);
+                                               scmd->device->timeout, 0);
 
                if (rtn == SUCCESS)
                        return 0;