src/patches/suse-2.6.27.31/patches.drivers/ibmvfc_class3.patch

   1 Subject: Fix command timeout errors
   2 From: Brian King <brking@linux.vnet.ibm.com>
   3 References: 472645 - LTC51429
   4
   5 Currently the ibmvfc driver sets the IBMVFC_CLASS_3_ERR flag
   6 in the VFC Frame if both the adapter and the device claim support
   7 for Class 3. However, this bit actually refers to Class 3 Error
   8 Recovery, which is currently not supported by the VIOS. Setting this
   9 bit can cause lots of command timeout responses from the VIOS resulting
  10 in general instability. Fix this by never setting this bit.
  11
  12 Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
  13 Signed-off-by: Olaf Hering <olh@suse.de>
  14 ---
  15
  16  drivers/scsi/ibmvscsi/ibmvfc.c |    3 ---
  17  1 file changed, 3 deletions(-)
  18
  19 --- a/drivers/scsi/ibmvscsi/ibmvfc.c
  20 +++ b/drivers/scsi/ibmvscsi/ibmvfc.c
  21 @@ -1571,9 +1571,6 @@ static int ibmvfc_queuecommand(struct sc
  22         vfc_cmd->resp_len = sizeof(vfc_cmd->rsp);
  23         vfc_cmd->cancel_key = (unsigned long)cmnd->device->hostdata;
  24         vfc_cmd->tgt_scsi_id = rport->port_id;
  25 -       if ((rport->supported_classes & FC_COS_CLASS3) &&
  26 -           (fc_host_supported_classes(vhost->host) & FC_COS_CLASS3))
  27 -               vfc_cmd->flags = IBMVFC_CLASS_3_ERR;
  28         vfc_cmd->iu.xfer_len = scsi_bufflen(cmnd);
  29         int_to_scsilun(cmnd->device->lun, &vfc_cmd->iu.lun);
  30         memcpy(vfc_cmd->iu.cdb, cmnd->cmnd, cmnd->cmd_len);