[SCSI] ibmvfc: Fixup TMF response handling

When processing the response to either a LUN reset,
target reset, or an abort task set, the ibmvfc driver needs to
treat as success receiving a response with a non-zero
status in the response IU along with a general transport
error with the FCP response code being zero. The VIOS
currently guarantees this cannot happen, but a future version
of VIOS may allow this to be returned, so ensure we handle
this response combination correctly for TMFs, as we already
do for SCSI commands.

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

diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index bb2c696..c35d805 100644 (file)
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -1731,7 +1731,10 @@ static int ibmvfc_reset_device(struct scsi_device *sdev, int type, char *desc)
        sdev_printk(KERN_INFO, sdev, "Resetting %s\n", desc);
        wait_for_completion(&evt->comp);
 
-       if (rsp_iu.cmd.status) {
+       if (rsp_iu.cmd.status)
+               rsp_code = ibmvfc_get_err_result(&rsp_iu.cmd);
+
+       if (rsp_code) {
                if (fc_rsp->flags & FCP_RSP_LEN_VALID)
                        rsp_code = fc_rsp->data.info.rsp_code;
 
@@ -1820,7 +1823,10 @@ static int ibmvfc_abort_task_set(struct scsi_device *sdev)
        sdev_printk(KERN_INFO, sdev, "Aborting outstanding commands\n");
        wait_for_completion(&evt->comp);
 
-       if (rsp_iu.cmd.status) {
+       if (rsp_iu.cmd.status)
+               rsp_code = ibmvfc_get_err_result(&rsp_iu.cmd);
+
+       if (rsp_code) {
                if (fc_rsp->flags & FCP_RSP_LEN_VALID)
                        rsp_code = fc_rsp->data.info.rsp_code;