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, 2 insertions, 2 deletions

diff --git a/drivers/block/z2ram.c b/drivers/block/z2ram.c
index 80754cdd3119..b66ad58a3c38 100644
--- a/drivers/block/z2ram.c
+++ b/drivers/block/z2ram.c
@@ -77,7 +77,7 @@ static void do_z2_request(struct request_queue *q)
                 if (start + len > z2ram_size) {
                         printk( KERN_ERR DEVICE_NAME ": bad access: block=%lu, count=%u\n",
                                 req->sector, req->current_nr_sectors);
-                        end_request(req, 0);
+                        __blk_end_request_cur(req, -EIO);
                         continue;
                 }
                 while (len) {
@@ -93,7 +93,7 @@ static void do_z2_request(struct request_queue *q)
                         start += size;
                         len -= size;
                 }
-                end_request(req, 1);
+                __blk_end_request_cur(req, 0);
         }
 }