linux-kernel - [PATCH] drm: mediatek: add COMMON

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Date:	Wed, 11 May 2016 14:34:22 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	David Airlie <airlied@...ux.ie>,
	Philipp Zabel <p.zabel@...gutronix.de>
Cc:	Arnd Bergmann <arnd@...db.de>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Bibby Hsieh <bibby.hsieh@...iatek.com>,
	YT Shen <yt.shen@...iatek.com>,
	Mao Huang <littlecvr@...omium.org>,
	Jitao Shi <jitao.shi@...iatek.com>, CK Hu <ck.hu@...iatek.com>,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org
Subject: [PATCH] drm: mediatek: add COMMON_CLK dependency

On kernel builds without COMMON_CLK, the newly added mediatek drm
driver fails to build:

drivers/gpu/drm/mediatek/mtk_mipi_tx.c:130:16: error: field 'pll_hw' has incomplete type
  struct clk_hw pll_hw;
                ^~~~~~
In file included from ../include/linux/clk.h:16:0,
                 from ../drivers/gpu/drm/mediatek/mtk_mipi_tx.c:14:
drivers/gpu/drm/mediatek/mtk_mipi_tx.c: In function 'mtk_mipi_tx_from_clk_hw':
include/linux/kernel.h:831:48: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
  const typeof( ((type *)0)->member ) *__mptr = (ptr); \
                                                ^
/drivers/gpu/drm/mediatek/mtk_mipi_tx.c:136:9: note: in expansion of macro 'container_of'
  return container_of(hw, struct mtk_mipi_tx, pll_hw);
         ^~~~~~~~~~~~
drivers/gpu/drm/mediatek/mtk_mipi_tx.c: At top level:
drivers/gpu/drm/mediatek/mtk_mipi_tx.c:302:21: error: variable 'mtk_mipi_tx_pll_ops' has initializer but incomplete type
 static const struct clk_ops mtk_mipi_tx_pll_ops = {

This adds the required Kconfig dependency.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/gpu/drm/mediatek/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/mediatek/Kconfig b/drivers/gpu/drm/mediatek/Kconfig
index eeefc971801a..0c06a69d7f04 100644
--- a/drivers/gpu/drm/mediatek/Kconfig
+++ b/drivers/gpu/drm/mediatek/Kconfig
@@ -2,6 +2,7 @@ config DRM_MEDIATEK
 	tristate "DRM Support for Mediatek SoCs"
 	depends on DRM
 	depends on ARCH_MEDIATEK || (ARM && COMPILE_TEST)
+	depends on COMMON_CLK
 	select DRM_GEM_CMA_HELPER
 	select DRM_KMS_HELPER
 	select DRM_MIPI_DSI
-- 
2.7.0