[PATCH 09/10] block: replace simple_strtoul() with kstrtoint() in part_timeout_store()

[Jackie Liu <liu.yun@linux.dev>]

From: Jackie Liu <liuyun01@kylinos.cn>

simple_strtoul() is deprecated. Switch to kstrtoint() which also
removes the need for the const-discarding cast and the if (count)
wrapper.

Signed-off-by: Jackie Liu <liuyun01@kylinos.cn>
---
 block/blk-timeout.c | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/block/blk-timeout.c b/block/blk-timeout.c
index eab6422fad4b..ea3c5451d6cf 100644
--- a/block/blk-timeout.c
+++ b/block/blk-timeout.c
@@ -49,18 +49,16 @@ ssize_t part_timeout_store(struct device *dev, struct device_attribute *attr,
 			   const char *buf, size_t count)
 {
 	struct gendisk *disk = dev_to_disk(dev);
+	struct request_queue *q = disk->queue;
 	int val;
 
-	if (count) {
-		struct request_queue *q = disk->queue;
-		char *p = (char *) buf;
+	if (kstrtoint(buf, 10, &val))
+		return -EINVAL;
 
-		val = simple_strtoul(p, &p, 10);
-		if (val)
-			blk_queue_flag_set(QUEUE_FLAG_FAIL_IO, q);
-		else
-			blk_queue_flag_clear(QUEUE_FLAG_FAIL_IO, q);
-	}
+	if (val)
+		blk_queue_flag_set(QUEUE_FLAG_FAIL_IO, q);
+	else
+		blk_queue_flag_clear(QUEUE_FLAG_FAIL_IO, q);
 
 	return count;
 }
-- 
2.51.1