tree-wide: use reinit_completion instead of INIT_COMPLETION

Use this new function to make code more comprehensible, since we are
reinitialzing the completion, not initializing.

[akpm@linux-foundation.org: linux-next resyncs]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org> (personally at LCE13)
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/tty/metag_da.c b/drivers/tty/metag_da.c
index 0e888621..7332e2c 100644
--- a/drivers/tty/metag_da.c
+++ b/drivers/tty/metag_da.c
@@ -495,7 +495,7 @@
 	count = dport->xmit_cnt;
 	/* xmit buffer no longer empty? */
 	if (count)
-		INIT_COMPLETION(dport->xmit_empty);
+		reinit_completion(&dport->xmit_empty);
 	mutex_unlock(&dport->xmit_lock);
 
 	if (total) {