firewire: Forward SAM status codes to the scsi stack.

Or the SAM status codes from the device sense data into the
command error code.

Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

1 files changed, 18 insertions, 21 deletions

diff --git a/drivers/firewire/fw-sbp2.c b/drivers/firewire/fw-sbp2.c
index d7940db30a5b..a7525234c862 100644
--- a/drivers/firewire/fw-sbp2.c
+++ b/drivers/firewire/fw-sbp2.c
@@ -764,8 +764,11 @@ static struct fw_driver sbp2_driver = {
         .id_table = sbp2_id_table,
 };
 
-static unsigned int sbp2_status_to_sense_data(u8 * sbp2_status, u8 * sense_data)
+static unsigned int
+sbp2_status_to_sense_data(u8 *sbp2_status, u8 *sense_data)
 {
+        int sam_status;
+
         sense_data[0] = 0x70;
         sense_data[1] = 0x0;
         sense_data[2] = sbp2_status[1];
@@ -783,22 +786,19 @@ static unsigned int sbp2_status_to_sense_data(u8 * sbp2_status, u8 * sense_data)
         sense_data[14] = sbp2_status[12];
         sense_data[15] = sbp2_status[13];
 
-        switch (sbp2_status[0] & 0x3f) {
-        case SAM_STAT_GOOD:
-                return DID_OK;
+        sam_status = sbp2_status[0] & 0x3f;
 
+        switch (sam_status) {
+        case SAM_STAT_GOOD:
         case SAM_STAT_CHECK_CONDITION:
-                /* return CHECK_CONDITION << 1 | DID_OK << 16; */
-                return DID_OK;
-
-        case SAM_STAT_BUSY:
-                return DID_BUS_BUSY;
-
         case SAM_STAT_CONDITION_MET:
+        case SAM_STAT_BUSY:
         case SAM_STAT_RESERVATION_CONFLICT:
         case SAM_STAT_COMMAND_TERMINATED:
+                return DID_OK << 16 | sam_status;
+
         default:
-                return DID_ERROR;
+                return DID_ERROR << 16;
         }
 }
 
@@ -812,33 +812,31 @@ complete_command_orb(struct sbp2_orb *base_orb, struct sbp2_status *status)
         int result;
 
         if (status != NULL) {
-                if (status_get_dead(*status)) {
-                        fw_notify("agent died, issuing agent reset\n");
+                if (status_get_dead(*status))
                         sbp2_agent_reset(unit);
-                }
 
                 switch (status_get_response(*status)) {
                 case SBP2_STATUS_REQUEST_COMPLETE:
-                        result = DID_OK;
+                        result = DID_OK << 16;
                         break;
                 case SBP2_STATUS_TRANSPORT_FAILURE:
-                        result = DID_BUS_BUSY;
+                        result = DID_BUS_BUSY << 16;
                         break;
                 case SBP2_STATUS_ILLEGAL_REQUEST:
                 case SBP2_STATUS_VENDOR_DEPENDENT:
                 default:
-                        result = DID_ERROR;
+                        result = DID_ERROR << 16;
                         break;
                 }
 
-                if (result == DID_OK && status_get_len(*status) > 1)
+                if (result == DID_OK << 16 && status_get_len(*status) > 1)
                         result = sbp2_status_to_sense_data(status_get_data(*status),
                                                            orb->cmd->sense_buffer);
         } else {
                 /* If the orb completes with status == NULL, something
                  * went wrong, typically a bus reset happened mid-orb
                  * or when sending the write (less likely). */
-                result = DID_BUS_BUSY;
+                result = DID_BUS_BUSY << 16;
         }
 
         dma_unmap_single(device->card->device, orb->base.request_bus,
@@ -859,9 +857,8 @@ complete_command_orb(struct sbp2_orb *base_orb, struct sbp2_status *status)
                                  sizeof orb->request_buffer_bus,
                                  DMA_FROM_DEVICE);
 
-        orb->cmd->result = result << 16;
+        orb->cmd->result = result;
         orb->done(orb->cmd);
-
         kfree(orb);
 }