dell-laptop - using buffer without mutex_lock

Using buffer->output[1] without mutex_lock()

Signed-off-by: Jose Alonso <joalonsof@gmail.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>

diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
index 04c34f1a265ce21ecf34e452bfb50d057f0962db..e39ab1d3ed878b6044a391db4be16b58224da0d2 100644 (file)
--- a/drivers/platform/x86/dell-laptop.c
+++ b/drivers/platform/x86/dell-laptop.c
@@ -540,11 +540,11 @@ static int dell_get_intensity(struct backlight_device *bd)
        else
                dell_send_request(buffer, 0, 1);
 
+       ret = buffer->output[1];
+
 out:
        release_buffer();
-       if (ret)
-               return ret;
-       return buffer->output[1];
+       return ret;
 }
 
 static const struct backlight_ops dell_ops = {