block: replace end_request() with [__]blk_end_request_cur()

end_request() has been kept around for backward compatibility;
however, it's about time for it to go away.

* There aren't too many users left.

* Its use of @updtodate is pretty confusing.

* In some cases, newer code ends up using mixture of end_request() and
  [__]blk_end_request[_all](), which is way too confusing.

So, add [__]blk_end_request_cur() and replace end_request() with it.
Most conversions are straightforward.  Noteworthy ones are...

* paride/pcd: next_request() updated to take 0/-errno instead of 1/0.

* paride/pf: pf_end_request() and next_request() updated to take
  0/-errno instead of 1/0.

* xd: xd_readwrite() updated to return 0/-errno instead of 1/0.

* mtd/mtd_blkdevs: blktrans_discard_request() updated to return
  0/-errno instead of 1/0.  Unnecessary local variable res
  initialization removed from mtd_blktrans_thread().

[ Impact: cleanup ]

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Joerg Dorchain <joerg@dorchain.net>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Laurent Vivier <Laurent@lvivier.info>
Cc: Tim Waugh <tim@cyberelk.net>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Markus Lidel <Markus.Lidel@shadowconnect.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Pete Zaitcev <zaitcev@redhat.com>
Cc: unsik Kim <donari75@gmail.com>

1 files changed, 7 insertions, 7 deletions

diff --git a/drivers/block/swim.c b/drivers/block/swim.c
index d22cc3856937..6544a7b06bf0 100644
--- a/drivers/block/swim.c
+++ b/drivers/block/swim.c
@@ -532,39 +532,39 @@ static void redo_fd_request(struct request_queue *q)
 
                 fs = req->rq_disk->private_data;
                 if (req->sector < 0 || req->sector >= fs->total_secs) {
-                        end_request(req, 0);
+                        __blk_end_request_cur(req, -EIO);
                         continue;
                 }
                 if (req->current_nr_sectors == 0) {
-                        end_request(req, 1);
+                        __blk_end_request_cur(req, 0);
                         continue;
                 }
                 if (!fs->disk_in) {
-                        end_request(req, 0);
+                        __blk_end_request_cur(req, -EIO);
                         continue;
                 }
                 if (rq_data_dir(req) == WRITE) {
                         if (fs->write_protected) {
-                                end_request(req, 0);
+                                __blk_end_request_cur(req, -EIO);
                                 continue;
                         }
                 }
                 switch (rq_data_dir(req)) {
                 case WRITE:
                         /* NOT IMPLEMENTED */
-                        end_request(req, 0);
+                        __blk_end_request_cur(req, -EIO);
                         break;
                 case READ:
                         if (floppy_read_sectors(fs, req->sector,
                                                 req->current_nr_sectors,
                                                 req->buffer)) {
-                                end_request(req, 0);
+                                __blk_end_request_cur(req, -EIO);
                                 continue;
                         }
                         req->nr_sectors -= req->current_nr_sectors;
                         req->sector += req->current_nr_sectors;
                         req->buffer += req->current_nr_sectors * 512;
-                        end_request(req, 1);
+                        __blk_end_request_cur(req, 0);
                         break;
                 }
         }