From: Akinobu Mita <akinobu.mita@gmail.com>
Date: Fri, 23 Mar 2012 22:02:05 +0000 (-0700)
Subject: s390/char: use for_each_clear_bit()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=fc89db4b789fc9edf88440f6896f04a879ed3b46;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git

s390/char: use for_each_clear_bit()

Use for_each_clear_bit() to iterate over all the cleared bit in a
memory region.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c
index 0b54a91f8dcd..168525a9c292 100644
--- a/drivers/s390/char/sclp_cmd.c
+++ b/drivers/s390/char/sclp_cmd.c
@@ -441,9 +441,8 @@ static int sclp_mem_notifier(struct notifier_block *nb,
 	start = arg->start_pfn << PAGE_SHIFT;
 	size = arg->nr_pages << PAGE_SHIFT;
 	mutex_lock(&sclp_mem_mutex);
-	for (id = 0; id <= sclp_max_storage_id; id++)
-		if (!test_bit(id, sclp_storage_ids))
-			sclp_attach_storage(id);
+	for_each_clear_bit(id, sclp_storage_ids, sclp_max_storage_id + 1)
+		sclp_attach_storage(id);
 	switch (action) {
 	case MEM_ONLINE:
 	case MEM_GOING_OFFLINE: