scsi: use dev_printk variants where possible

Using dev_printk variants prefixes the logging message with
the originating device, which makes debugging easier.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>

drivers/scsi/scsi.c

@@ -655,7 +655,7 @@ int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
 
 	/* Check to see if the scsi lld made this device blocked. */
 	if (unlikely(scsi_device_blocked(cmd->device))) {
-		/* 
+		/*
 		 * in blocked state, the command is just put back on
 		 * the device queue.  The suspend state has already
 		 * blocked the queue so future requests should not
@@ -665,7 +665,8 @@ int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
 
 		scsi_queue_insert(cmd, SCSI_MLQUEUE_DEVICE_BUSY);
 
-		SCSI_LOG_MLQUEUE(3, printk("queuecommand : device blocked \n"));
+		SCSI_LOG_MLQUEUE(3, scmd_printk(KERN_INFO, cmd,
+			"queuecommand : device blocked\n"));
 
 		/*
 		 * NOTE: rtn is still zero here because we don't need the
@@ -674,7 +675,7 @@ int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
 		goto out;
 	}
 
-	/* 
+	/*
 	 * If SCSI-2 or lower, store the LUN value in cmnd.
 	 */
 	if (cmd->device->scsi_level <= SCSI_2 &&
@@ -690,8 +691,8 @@ int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
 	 * length exceeds what the host adapter can handle.
 	 */
 	if (cmd->cmd_len > cmd->device->host->max_cmd_len) {
-		SCSI_LOG_MLQUEUE(3,
-			printk("queuecommand : command too long. "
+		SCSI_LOG_MLQUEUE(3, scmd_printk(KERN_INFO, cmd,
+			       "queuecommand : command too long. "
 			       "cdb_size=%d host->max_cmd_len=%d\n",
 			       cmd->cmd_len, cmd->device->host->max_cmd_len));
 		cmd->result = (DID_ABORT << 16);
@@ -715,14 +716,13 @@ int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
 		    rtn != SCSI_MLQUEUE_TARGET_BUSY)
 			rtn = SCSI_MLQUEUE_HOST_BUSY;
 
-		scsi_queue_insert(cmd, rtn);
+		SCSI_LOG_MLQUEUE(3, scmd_printk(KERN_INFO, cmd,
+			"queuecommand : request rejected\n"));
 
-		SCSI_LOG_MLQUEUE(3,
-		    printk("queuecommand : request rejected\n"));
+		scsi_queue_insert(cmd, rtn);
 	}
 
  out:
-	SCSI_LOG_MLQUEUE(3, printk("leaving scsi_dispatch_cmnd()\n"));
 	return rtn;
 }