Hi Meghana, [auto build test ERROR on drm/drm-next] [also build test ERROR on v4.14-rc3 next-20170929] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Meghana-Madhyastha/drm-tinydrm-drm_of_find_backlight-helper/20171003-011920 base: git://people.freedesktop.org/~airlied/linux.git drm-next config: arm-sunxi_defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (Debian 6.1.1-9) 6.1.1 20160705 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=arm All errors (new ones prefixed by >>): >> drivers/gpu/drm/drm_of.c:283:26: error: redefinition of 'drm_of_find_backlight' struct backlight_device *drm_of_find_backlight(struct device *dev) ^~~~~~~~~~~~~~~~~~~~~ In file included from drivers/gpu/drm/drm_of.c:4:0: include/linux/backlight.h:180:1: note: previous definition of 'drm_of_find_backlight' was here drm_of_find_backlight(struct device *dev) ^~~~~~~~~~~~~~~~~~~~~ vim +/drm_of_find_backlight +283 drivers/gpu/drm/drm_of.c 264 265 /** 266 * drm_of_find_backlight - Find backlight device in device-tree 267 * @dev: Device 268 * 269 * This function looks for a DT node pointed to by a property named 'backlight' 270 * and uses of_find_backlight_by_node() to get the backlight device. 271 * Additionally if the brightness property is zero, it is set to 272 * max_brightness. 273 * 274 * Note: It is the responsibility of the caller to call put_device() when 275 * releasing the resource. 276 * 277 * Returns: 278 * NULL if there's no backlight property. 279 * Error pointer -EPROBE_DEFER if the DT node is found, but no backlight device 280 * is found. 281 * If the backlight device is found, a pointer to the structure is returned. 282 */ > 283 struct backlight_device *drm_of_find_backlight(struct device *dev) --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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