linux-kernel - Re: [PATCH] drm/sun4i: add COMMON

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Message-ID: <20160504183347.GE17159@lukather>
Date:	Wed, 4 May 2016 20:33:47 +0200
From:	Maxime Ripard <maxime.ripard@...e-electrons.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	David Airlie <airlied@...ux.ie>, Chen-Yu Tsai <wens@...e.org>,
	Dave Airlie <airlied@...hat.com>,
	Boris Brezillon <boris.brezillon@...e-electrons.com>,
	linux-arm-kernel@...ts.infradead.org,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/sun4i: add COMMON_CLK dependency

Hi,

On Mon, May 02, 2016 at 12:59:48PM +0200, Arnd Bergmann wrote:
> The sun4i drm driver uses the clk-provider interfaces, which are not available
> when CONFIG_COMMON_CLK is disabled:
> 
> drivers/gpu/drm/sun4i/sun4i_dotclock.c:19:16: error: field 'hw' has incomplete type
>   struct clk_hw hw;
> In file included from ../include/asm-generic/bug.h:13:0,
>                  from ../arch/arm/include/asm/bug.h:59,
>                  from ../include/linux/bug.h:4,
>                  from ../include/linux/io.h:23,
>                  from ../include/linux/clk-provider.h:14,
>                  from ../drivers/gpu/drm/sun4i/sun4i_dotclock.c:13:
> drivers/gpu/drm/sun4i/sun4i_dotclock.c: In function 'hw_to_dclk':
> include/linux/kernel.h:831:48: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
> ...
> 
> This adds a Kconfig dependency to prevent the driver from being enabled
> in this case.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> Fixes: 9026e0d122ac ("drm: Add Allwinner A10 Display Engine support")

Applied, thanks!
Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

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