Re: [PATCH v2] backlight: propagate errors from get_brightness()

From: Thomas Weißschuh
Date: Tue Sep 07 2021 - 10:52:42 EST


On 2021-09-07T14:10+0100, Daniel Thompson wrote:
> On Tue, Sep 07, 2021 at 02:47:51PM +0200, Thomas Weißschuh wrote:
> > backlight.h documents "struct backlight_ops->get_brightness()" to return
> > a negative errno on failure.
> > So far these errors have not been handled in the backlight core.
> > This leads to negative values being exposed through sysfs although only
> > positive values are documented to be reported.
> >
> > Signed-off-by: Thomas Weißschuh <linux@xxxxxxxxxxxxxx>
>
> Reviewed-by: Daniel Thompson <daniel.thompson@xxxxxxxxxx>

Thanks!

Thomas