[SCSI] ibmvscsi: treat busy and error conditions separately

This patch fixes a condition where ibmvscsi treats a transport error as a
"busy" condition, so no errors were returned to the scsi mid-layer.
In a RAID environment this means that I/O hung rather than failing
over.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/scsi/ibmvscsi/rpa_vscsi.c b/drivers/scsi/ibmvscsi/rpa_vscsi.c
index 1a9992bdfef8..242b8873b333 100644
--- a/drivers/scsi/ibmvscsi/rpa_vscsi.c
+++ b/drivers/scsi/ibmvscsi/rpa_vscsi.c
@@ -208,6 +208,7 @@ int ibmvscsi_init_crq_queue(struct crq_queue *queue,
                             int max_requests)
 {
         int rc;
+        int retrc;
         struct vio_dev *vdev = to_vio_dev(hostdata->dev);
 
         queue->msgs = (struct viosrp_crq *)get_zeroed_page(GFP_KERNEL);
@@ -226,7 +227,7 @@ int ibmvscsi_init_crq_queue(struct crq_queue *queue,
         gather_partition_info();
         set_adapter_info(hostdata);
 
-        rc = plpar_hcall_norets(H_REG_CRQ,
+        retrc = rc = plpar_hcall_norets(H_REG_CRQ,
                                 vdev->unit_address,
                                 queue->msg_token, PAGE_SIZE);
         if (rc == H_RESOURCE)
@@ -263,7 +264,7 @@ int ibmvscsi_init_crq_queue(struct crq_queue *queue,
         tasklet_init(&hostdata->srp_task, (void *)ibmvscsi_task,
                      (unsigned long)hostdata);
 
-        return 0;
+        return retrc;
 
       req_irq_failed:
         do {