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, 3 insertions, 2 deletions

diff --git a/drivers/block/paride/pd.c b/drivers/block/paride/pd.c
index 9299455b0af6..0732df4e901a 100644
--- a/drivers/block/paride/pd.c
+++ b/drivers/block/paride/pd.c
@@ -410,7 +410,8 @@ static void run_fsm(void)
                                 pd_claimed = 0;
                                 phase = NULL;
                                 spin_lock_irqsave(&pd_lock, saved_flags);
-                                end_request(pd_req, res);
+                                __blk_end_request_cur(pd_req,
+                                                      res == Ok ? 0 : -EIO);
                                 pd_req = elv_next_request(pd_queue);
                                 if (!pd_req)
                                         stop = 1;
@@ -477,7 +478,7 @@ static int pd_next_buf(void)
         if (pd_count)
                 return 0;
         spin_lock_irqsave(&pd_lock, saved_flags);
-        end_request(pd_req, 1);
+        __blk_end_request_cur(pd_req, 0);
         pd_count = pd_req->current_nr_sectors;
         pd_buf = pd_req->buffer;
         spin_unlock_irqrestore(&pd_lock, saved_flags);