Check if we were successful in setting the requested brightness and report failure in that case.
Signed-off-by: Mattia Dongili <[email protected]> --- drivers/platform/x86/sony-laptop.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c index c8d755a..2fe7ddd 100644 --- a/drivers/platform/x86/sony-laptop.c +++ b/drivers/platform/x86/sony-laptop.c @@ -961,9 +961,10 @@ static int sony_nc_update_status_ng(struct backlight_device *bd) int *handle = (int *)bl_get_data(bd); value = bd->props.brightness; - sony_call_snc_handle(*handle, 0x0100 | (value << 16), &result); + if (sony_call_snc_handle(*handle, 0x0100 | (value << 16), &result)) + return -EIO; - return sony_nc_get_brightness_ng(bd); + return value; } static const struct backlight_ops sony_backlight_ops = { -- 1.7.4.1 -- To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
