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ipr: Inhibit underlength data check for AFDASD in raw mode. 

Disable underlength error verification based on count of bytes actually
transferred for AF DASD devices when SIS pipe mode is enabled.

This avoids unexpected underlength errors when issuing some commands in
raw mode.

Signed-off-by: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com>
Reviewed-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
This commit is contained in:
Gabriel Krisman Bertazi 2015-08-19 11:47:05 -03:00 committed by James Bottomley
parent c75683ca13
commit 3cb4fc1fca
1 changed files with 5 additions and 1 deletions
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6
drivers/scsi/ipr.c
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@ -6383,9 +6383,13 @@ static int ipr_queuecommand(struct Scsi_Host *shost,
(!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) {
ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
}
if (res->raw_mode && ipr_is_af_dasd_device(res))
if (res->raw_mode && ipr_is_af_dasd_device(res)) {
ioarcb->cmd_pkt.request_type = IPR_RQTYPE_PIPE;
if (scsi_cmd->underflow == 0)
ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
}
if (ioa_cfg->sis64)
rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
else