[SCSI] always handle REQ_BLOCK_PC requests in common code

LLDDs should never see REQ_BLOCK_PC requests, we can handle them just
fine in the core code.  There is a small behaviour change in that some
check in sr's rw_intr are bypassed, but I consider the old behaviour
a bug.

Mike found this cleanup opportunity and provdided early patches, so all
the credit goes to him, even if I redid the patches from scratch beause
that was easier than forward-porting the old patches.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 0 insertions, 25 deletions

diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index 6e4a36af58c3..13b1d3aac265 100644
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -194,7 +194,6 @@ static int sgl_unmap_user_pages(struct scatterlist *, const unsigned int, int);
 
 static int st_probe(struct device *);
 static int st_remove(struct device *);
-static int st_init_command(struct scsi_cmnd *);
 
 static void do_create_driverfs_files(void);
 static void do_remove_driverfs_files(void);
@@ -207,7 +206,6 @@ static struct scsi_driver st_template = {
                 .probe          = st_probe,
                 .remove         = st_remove,
         },
-        .init_command           = st_init_command,
 };
 
 static int st_compression(struct scsi_tape *, int);
@@ -4181,29 +4179,6 @@ static void scsi_tape_release(struct kref *kref)
         return;
 }
 
-static void st_intr(struct scsi_cmnd *SCpnt)
-{
-        /*
-         * The caller should be checking the request's errors
-         * value.
-         */
-        scsi_io_completion(SCpnt, SCpnt->bufflen, 0);
-}
-
-/*
- * st_init_command: only called via the scsi_cmd_ioctl (block SG_IO)
- * interface for REQ_BLOCK_PC commands.
- */
-static int st_init_command(struct scsi_cmnd *SCpnt)
-{
-        if (!(SCpnt->request->flags & REQ_BLOCK_PC))
-                return 0;
-
-        scsi_setup_blk_pc_cmnd(SCpnt);
-        SCpnt->done = st_intr;
-        return 1;
-}
-
 static int __init init_st(void)
 {
         validate_options();