src/patches/suse-2.6.27.31/patches.suse/scsi-error-test-unit-ready-timeout

   1 From: garloff@suse.de
   2 Subject: Introduce own timeout for TEST_UNIT_READY
   3 Reference: SUSE41689
   4
   5 In error recovery, a SCSI device may need more than the 10s SENSE_TIMEOUT
   6 to respond to TEST_UNIT_READY, as reported in novell bugzilla #56689.
   7 The patch introduces an own timeout for TEST_UNIT_READY which is set
   8 to 30s and used.
   9
  10 Signed-off-by: Kurt Garloff <garloff@suse.de>
  11
  12 ---
  13  drivers/scsi/scsi_error.c |    3 ++-
  14  1 file changed, 2 insertions(+), 1 deletion(-)
  15
  16 --- a/drivers/scsi/scsi_error.c
  17 +++ b/drivers/scsi/scsi_error.c
  18 @@ -42,6 +42,7 @@
  19  #include "scsi_transport_api.h"
  20
  21  #define SENSE_TIMEOUT          (10*HZ)
  22 +#define TEST_UNIT_READY_TIMEOUT        (30*HZ)
  23
  24  /*
  25   * These should *probably* be handled by the host itself.
  26 @@ -938,7 +939,7 @@ static int scsi_eh_tur(struct scsi_cmnd
  27         int retry_cnt = 1, rtn;
  28
  29  retry_tur:
  30 -       rtn = scsi_send_eh_cmnd(scmd, tur_command, 6, SENSE_TIMEOUT, 0);
  31 +       rtn = scsi_send_eh_cmnd(scmd, tur_command, 6, TEST_UNIT_READY_TIMEOUT, 0);
  32
  33         SCSI_LOG_ERROR_RECOVERY(3, printk("%s: scmd %p rtn %x\n",
  34                 __func__, scmd, rtn));