[PATCH 4/4] tty/serial: sh-sci: remove uneeded IS_ERR_OR_NULL calls

[Linus Walleij]

On Thu, Mar 23, 2017 at 1:34 PM, Uwe Kleine-König
<u.kleine-koenig at pengutronix.de> wrote:

> Maybe we can make gpiod_get_optional look like this:
>
>         if (!dev->of_node && isnt_a_acpi_device(dev) && !IS_ENABLED(GPIOLIB))
>                 return NULL;
>         else
>                 return -ENOSYS;
>
> I don't know how isnt_a_acpi_device looks like, probably it involves
> CONFIG_ACPI and/or dev->acpi_node.
>
> This should be safe and still comfortable for legacy platforms, isn't it?

I like the looks of this.

Can we revert Dmitry's patch and apply something like this instead?

Dmitry, how do you feel about this?

Yours,
Linus Walleij