ata: libahci: replace obsolete simple_strtoul() with kstrtouint()

Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c
index 0cff1167c83c..956851f0d44f 100644
--- a/drivers/ata/libahci.c
+++ b/drivers/ata/libahci.c
@@ -1031,12 +1031,13 @@ static ssize_t ahci_led_show(struct ata_port *ap, char *buf)
 static ssize_t ahci_led_store(struct ata_port *ap, const char *buf,
                                 size_t size)
 {
-        int state;
+        unsigned int state;
         int pmp;
         struct ahci_port_priv *pp = ap->private_data;
         struct ahci_em_priv *emp;
 
-        state = simple_strtoul(buf, NULL, 0);
+        if (kstrtouint(buf, 0, &state) < 0)
+                return -EINVAL;
 
         /* get the slot number from the message */
         pmp = (state & EM_MSG_LED_PMP_SLOT) >> 8;