Re: [PATCH 1/2] gpiolib: don't allow userspace to set values of input lines

From: Bartosz Golaszewski
Date: Mon Jul 16 2018 - 10:13:20 EST


2018-07-16 15:40 GMT+02:00 Linus Walleij <linus.walleij@xxxxxxxxxx>:
> On Mon, Jul 16, 2018 at 10:34 AM Bartosz Golaszewski <brgl@xxxxxxxx> wrote:
>
>> User space can currently both read and set values of input lines using
>> the character device. This was not allowed by the old sysfs interface
>> nor is it a correct behavior.
>>
>> Check the first descriptor in the set for the OUT flag when asked to
>> set values and return -EPERM if the line is input.
>>
>> Signed-off-by: Bartosz Golaszewski <brgl@xxxxxxxx>
>
> Patch applied! Thanks for fixing this.
>

Thanks. Do you think we should Cc stable on that one?

Bart