From fc89db4b789fc9edf88440f6896f04a879ed3b46 Mon Sep 17 00:00:00 2001
From: Akinobu Mita <akinobu.mita@gmail.com>
Date: Fri, 23 Mar 2012 15:02:05 -0700
Subject: [PATCH] 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>
---
drivers/s390/char/sclp_cmd.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c
index 0b54a91f8dcd2..168525a9c2928 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:
--
GitLab