Bluetooth: Re-use kstrtobool_from_user()

Re-use kstrtobool_from_user() instead of open coded variant.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 4 insertions, 8 deletions

diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
index a2ddae2f37d7..ae91e2d40056 100644
--- a/net/bluetooth/smp.c
+++ b/net/bluetooth/smp.c
@@ -3315,16 +3315,12 @@ static ssize_t force_bredr_smp_write(struct file *file,
                                      size_t count, loff_t *ppos)
 {
         struct hci_dev *hdev = file->private_data;
-        char buf[32];
-        size_t buf_size = min(count, (sizeof(buf)-1));
         bool enable;
+        int err;
 
-        if (copy_from_user(buf, user_buf, buf_size))
-                return -EFAULT;
-
-        buf[buf_size] = '\0';
-        if (strtobool(buf, &enable))
-                return -EINVAL;
+        err = kstrtobool_from_user(user_buf, count, &enable);
+        if (err)
+                return err;
 
         if (enable == hci_dev_test_flag(hdev, HCI_FORCE_BREDR_SMP))
                 return -EALREADY;