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 <[email protected]> Cc: Martin Schwidefsky <[email protected]> Cc: Heiko Carstens <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
wangbin579 · Mar 23, 2012 · fc89db4 · fc89db4
1 parent c527b41
commit fc89db4
Showing 1 changed file with 2 additions and 3 deletions.
diff --git 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: