Upgrade to 4.4.50-rt62

[kvmfornfv.git] / kernel / drivers / scsi / scsi_lib.c

diff --git a/kernel/drivers/scsi/scsi_lib.c b/kernel/drivers/scsi/scsi_lib.c
index dd8ad2a..cf5b99e 100644 (file)
--- a/kernel/drivers/scsi/scsi_lib.c
+++ b/kernel/drivers/scsi/scsi_lib.c
@@ -910,9 +910,12 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
        }
 
        /*
-        * If we finished all bytes in the request we are done now.
+        * special case: failed zero length commands always need to
+        * drop down into the retry code. Otherwise, if we finished
+        * all bytes in the request we are done now.
         */
-       if (!scsi_end_request(req, error, good_bytes, 0))
+       if (!(blk_rq_bytes(req) == 0 && error) &&
+           !scsi_end_request(req, error, good_bytes, 0))
                return;
 
        /*