[SCSI] fix barrier failure issue

[linux-2.6-omap-h63xx.git] / drivers / scsi / scsi_lib.c

diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 1b199e15ce9b2d356fa2079d06f8a7e774a24777..67f412bb4974b91783009fb3404c4a589bb6f6c8 100644 (file)
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -839,7 +839,7 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
        int this_count = scsi_bufflen(cmd);
        struct request_queue *q = cmd->device->request_queue;
        struct request *req = cmd->request;
-       int clear_errors = 1;
+       int error = 0;
        struct scsi_sense_hdr sshdr;
        int sense_valid = 0;
        int sense_deferred = 0;
@@ -853,7 +853,6 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
        if (blk_pc_request(req)) { /* SG_IO ioctl from block level */
                req->errors = result;
                if (result) {
-                       clear_errors = 0;
                        if (sense_valid && req->sense) {
                                /*
                                 * SG_IO wants current and deferred errors
@@ -865,6 +864,8 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
                                memcpy(req->sense, cmd->sense_buffer,  len);
                                req->sense_len = len;
                        }
+                       if (!sense_deferred)
+                               error = -EIO;
                }
                if (scsi_bidi_cmnd(cmd)) {
                        /* will also release_buffers */
@@ -885,14 +886,11 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
                                      "%d bytes done.\n",
                                      req->nr_sectors, good_bytes));
 
-       if (clear_errors)
-               req->errors = 0;
-
        /* A number of bytes were successfully read.  If there
         * are leftovers and there is some kind of error
         * (result != 0), retry the rest.
         */
-       if (scsi_end_request(cmd, 0, good_bytes, result == 0) == NULL)
+       if (scsi_end_request(cmd, error, good_bytes, result == 0) == NULL)
                return;
 
        /* good_bytes = 0, or (inclusive) there were leftovers and