Re: [PATCH] gpio: Remove superfluous include of io-mapping.h

From: Linus Walleij
Date: Wed Aug 24 2016 - 07:55:34 EST

On Tue, Aug 23, 2016 at 10:32 PM, Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> wrote:

> The io-mapping.h include arose from the need to workaround an arch/um
> compile failure:
> drivers/gpio/gpio-mpc8xxx.c: In function 'mpc8xxx_probe':
>>> drivers/gpio/gpio-mpc8xxx.c:373:2: error: implicit declaration of
>>> function 'iounmap' [-Werror=implicit-function-declaration]
> iounmap(mpc8xxx_gc->regs);
> ^~~~~~~
> from commit 296ad4acb8ef ("gpio: remove deps on
> ARCH_[WANT_OPTIONAL|REQUIRE]_GPIOLIB") but io-mapping.h doesn't provide
> iounmap so the problem persisted and eventually (will be) silenced by
> making OF_GPIO depend on !NO_IOMEM (i.e. disabling building under
> arch/um). My desire to remove the unneed include to io-mapping is to
> simplify verification of changes to io-mapping.h
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>
> Cc: Alexandre Courbot <gnurou@xxxxxxxxx>
> Cc: linux-gpio@xxxxxxxxxxxxxxx

I chose to to a proper revert instead, but I have added your for

Thanks a lot.

Linus Walleij