[PATCH] hpfs: Replace simple_strtoul with kstrtoint in hpfs_parse_param

[Su Hui <suhui@xxxxxxxxxxxx>]

kstrtoint() is better because simple_strtoul() ignores overflow and the
type of 'timeshift' is 'int' rather than 'unsigned long'. Using kstrtoint()
is more concise too.

Signed-off-by: Su Hui <suhui@xxxxxxxxxxxx>
---
 fs/hpfs/super.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c
index 27567920abe4..8c594939ea80 100644
--- a/fs/hpfs/super.c
+++ b/fs/hpfs/super.c
@@ -404,15 +404,11 @@ static int hpfs_parse_param(struct fs_context *fc, struct fs_parameter *param)
 		break;
 	case Opt_timeshift:
 		{
-			int m = 1;
 			char *rhs = param->string;
 			int timeshift;
 
-			if (*rhs == '-') m = -1;
-			if (*rhs == '+' || *rhs == '-') rhs++;
-			timeshift = simple_strtoul(rhs, &rhs, 0) * m;
-			if (*rhs)
-					return -EINVAL;
+			if (kstrtoint(rhs, 0, &timeshift))
+				return -EINVAL;
 			ctx->timeshift = timeshift;
 			break;
 		}
-- 
2.30.2