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>

diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index 341191952155d75700173e29a2caa8ad856a24cd..ba16dd79f4519a155ac77dad40ac2f5fcd7ba834 100644 (file)
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -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