diff options
| -rw-r--r-- | drivers/hid/hid-apple.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/hid/hid-apple.c b/drivers/hid/hid-apple.c index b8b99eb01a35..78920a8afa85 100644 --- a/drivers/hid/hid-apple.c +++ b/drivers/hid/hid-apple.c @@ -916,7 +916,8 @@ static int apple_magic_backlight_init(struct hid_device *hdev) backlight->brightness = report_enum->report_id_hash[APPLE_MAGIC_REPORT_ID_BRIGHTNESS]; backlight->power = report_enum->report_id_hash[APPLE_MAGIC_REPORT_ID_POWER]; - if (!backlight->brightness || !backlight->power) + if (!backlight->brightness || backlight->brightness->maxfield < 2 || + !backlight->power || backlight->power->maxfield < 2) return -ENODEV; backlight->cdev.name = ":white:" LED_FUNCTION_KBD_BACKLIGHT; |