1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 0e81e4cf8876..8df8267ce316 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1092,6 +1092,7 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
         }
         scsi_end_request(cmd, 0, this_count, !result);
 }
+EXPORT_SYMBOL(scsi_io_completion);
 
 /*
  * Function:    scsi_init_io()
@@ -1170,6 +1171,18 @@ static struct scsi_cmnd *scsi_get_cmd_from_req(struct scsi_device *sdev,
         return cmd;
 }
 
+static void scsi_blk_pc_done(struct scsi_cmnd *cmd)
+{
+        BUG_ON(!blk_pc_request(cmd->request));
+        /*
+         * This will complete the whole command with uptodate=1 so
+         * as far as the block layer is concerned the command completed
+         * successfully. Since this is a REQ_BLOCK_PC command the
+         * caller should check the request's errors value
+         */
+        scsi_io_completion(cmd, cmd->request_bufflen);
+}
+
 int scsi_setup_blk_pc_cmnd(struct scsi_device *sdev, struct request *req)
 {
         struct scsi_cmnd *cmd;
@@ -1219,6 +1232,7 @@ int scsi_setup_blk_pc_cmnd(struct scsi_device *sdev, struct request *req)
         cmd->transfersize = req->data_len;
         cmd->allowed = req->retries;
         cmd->timeout_per_command = req->timeout;
+        cmd->done = scsi_blk_pc_done;
         return BLKPREP_OK;
 }
 EXPORT_SYMBOL(scsi_setup_blk_pc_cmnd);