[SCSI] ibmvfc: Fix command timeout errors

Currently the ibmvfc driver sets the IBMVFC_CLASS_3_ERR flag
in the VFC Frame if both the adapter and the device claim support
for Class 3. However, this bit actually refers to Class 3 Error
Recovery, which is currently not supported by the VIOS. Setting this
bit can cause lots of command timeout responses from the VIOS resulting
in general instability. Fix this by never setting this bit.

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

diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index a1a511bdec8cb87961023da3bbf487de6d9a580e..41226e3a741f4767d1aa9701eabff191e6f0ac81 100644 (file)
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -1573,9 +1573,6 @@ static int ibmvfc_queuecommand(struct scsi_cmnd *cmnd,
        vfc_cmd->resp_len = sizeof(vfc_cmd->rsp);
        vfc_cmd->cancel_key = (unsigned long)cmnd->device->hostdata;
        vfc_cmd->tgt_scsi_id = rport->port_id;
-       if ((rport->supported_classes & FC_COS_CLASS3) &&
-           (fc_host_supported_classes(vhost->host) & FC_COS_CLASS3))
-               vfc_cmd->flags = IBMVFC_CLASS_3_ERR;
        vfc_cmd->iu.xfer_len = scsi_bufflen(cmnd);
        int_to_scsilun(cmnd->device->lun, &vfc_cmd->iu.lun);
        memcpy(vfc_cmd->iu.cdb, cmnd->cmnd, cmnd->cmd_len);