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[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>
This commit is contained in:
Brian King 2009-02-04 16:13:08 -06:00 committed by James Bottomley
parent 76e3a19d06
commit d4b17a20f3
1 changed files with 0 additions and 3 deletions
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3
drivers/scsi/ibmvscsi/ibmvfc.c
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@ -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);