Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (170 commits)
  [SCSI] scsi_dh_rdac: Add MD36xxf into device list
  [SCSI] scsi_debug: add consecutive medium errors
  [SCSI] libsas: fix ata list corruption issue
  [SCSI] hpsa: export resettable host attribute
  [SCSI] hpsa: move device attributes to avoid forward declarations
  [SCSI] scsi_debug: Logical Block Provisioning (SBC3r26)
  [SCSI] sd: Logical Block Provisioning update
  [SCSI] Include protection operation in SCSI command trace
  [SCSI] hpsa: fix incorrect PCI IDs and add two new ones (2nd try)
  [SCSI] target: Fix volume size misreporting for volumes > 2TB
  [SCSI] bnx2fc: Broadcom FCoE offload driver
  [SCSI] fcoe: fix broken fcoe interface reset
  [SCSI] fcoe: precedence bug in fcoe_filter_frames()
  [SCSI] libfcoe: Remove stale fcoe-netdev entries
  [SCSI] libfcoe: Move FCOE_MTU definition from fcoe.h to libfcoe.h
  [SCSI] libfc: introduce __fc_fill_fc_hdr that accepts fc_hdr as an argument
  [SCSI] fcoe, libfc: initialize EM anchors list and then update npiv EMs
  [SCSI] Revert "[SCSI] libfc: fix exchange being deleted when the abort itself is timed out"
  [SCSI] libfc: Fixing a memory leak when destroying an interface
  [SCSI] megaraid_sas: Version and Changelog update
  ...

Fix up trivial conflicts due to whitespace differences in
drivers/scsi/libsas/{sas_ata.c,sas_scsi_host.c}

1 files changed, 34 insertions, 2 deletions

diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index fb2bb35c62c..2d63c8ad144 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -667,6 +667,30 @@ void scsi_release_buffers(struct scsi_cmnd *cmd)
 }
 EXPORT_SYMBOL(scsi_release_buffers);
 
+static int __scsi_error_from_host_byte(struct scsi_cmnd *cmd, int result)
+{
+	int error = 0;
+
+	switch(host_byte(result)) {
+	case DID_TRANSPORT_FAILFAST:
+		error = -ENOLINK;
+		break;
+	case DID_TARGET_FAILURE:
+		cmd->result |= (DID_OK << 16);
+		error = -EREMOTEIO;
+		break;
+	case DID_NEXUS_FAILURE:
+		cmd->result |= (DID_OK << 16);
+		error = -EBADE;
+		break;
+	default:
+		error = -EIO;
+		break;
+	}
+
+	return error;
+}
+
 /*
  * Function:    scsi_io_completion()
  *
@@ -737,7 +761,7 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
 				req->sense_len = len;
 			}
 			if (!sense_deferred)
-				error = -EIO;
+				error = __scsi_error_from_host_byte(cmd, result);
 		}
 
 		req->resid_len = scsi_get_resid(cmd);
@@ -796,7 +820,7 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
 	if (scsi_end_request(cmd, error, good_bytes, result == 0) == NULL)
 		return;
 
-	error = -EIO;
+	error = __scsi_error_from_host_byte(cmd, result);
 
 	if (host_byte(result) == DID_RESET) {
 		/* Third party bus reset or reset for error recovery
@@ -843,6 +867,13 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
 				description = "Host Data Integrity Failure";
 				action = ACTION_FAIL;
 				error = -EILSEQ;
+			/* INVALID COMMAND OPCODE or INVALID FIELD IN CDB */
+			} else if ((sshdr.asc == 0x20 || sshdr.asc == 0x24) &&
+				   (cmd->cmnd[0] == UNMAP ||
+				    cmd->cmnd[0] == WRITE_SAME_16 ||
+				    cmd->cmnd[0] == WRITE_SAME)) {
+				description = "Discard failure";
+				action = ACTION_FAIL;
 			} else
 				action = ACTION_FAIL;
 			break;
@@ -1038,6 +1069,7 @@ static struct scsi_cmnd *scsi_get_cmd_from_req(struct scsi_device *sdev,
 	cmd->request = req;
 
 	cmd->cmnd = req->cmd;
+	cmd->prot_op = SCSI_PROT_NORMAL;
 
 	return cmd;
 }