[SCSI] Get rid of scsi_cmnd->done

The ULD ->done callback moves into the scsi_driver.  By moving the call
to scsi_io_completion() from scsi_blk_pc_done() to scsi_finish_command(),
we can eliminate the latter entirely.  By returning 'good_bytes' from
the ->done callback (rather than invoking scsi_io_completion()), we can
stop exporting scsi_io_completion().

Also move the prototypes from sd.h to sd.c as they're all internal anyway.
Rename sd_rw_intr to sd_done and rw_intr to sr_done.

Inspired-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 0 insertions, 14 deletions

diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 86fd3abe731a..fac34293bef7 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -982,7 +982,6 @@ 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()
@@ -1063,18 +1062,6 @@ 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;
@@ -1124,7 +1111,6 @@ 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);