1 files changed, 5 insertions, 9 deletions

diff --git a/drivers/misc/sgi-gru/gruprocfs.c b/drivers/misc/sgi-gru/gruprocfs.c
index 797d7962cc88..4f7635922394 100644
--- a/drivers/misc/sgi-gru/gruprocfs.c
+++ b/drivers/misc/sgi-gru/gruprocfs.c
@@ -160,15 +160,11 @@ static int options_show(struct seq_file *s, void *p)
 static ssize_t options_write(struct file *file, const char __user *userbuf,
                              size_t count, loff_t *data)
 {
-        char buf[20];
-
-        if (count >= sizeof(buf))
-                return -EINVAL;
-        if (copy_from_user(buf, userbuf, count))
-                return -EFAULT;
-        buf[count] = '\0';
-        if (strict_strtoul(buf, 0, &gru_options))
-                return -EINVAL;
+        int ret;
+
+        ret = kstrtoul_from_user(userbuf, count, 0, &gru_options);
+        if (ret)
+                return ret;
 
         return count;
 }