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Subject[kraxel:drm-qemu-next 31/70] drivers/gpu/drm/vc4/vc4_dpi.c:247:18: error: implicit declaration of function 'drmm_of_get_bridge'; did you mean 'devm_drm_of_get_bridge'?
tree:   git://git.kraxel.org/linux drm-qemu-next
head: 887ddf3251928dc39bfc58c5c62083d38a633c14
commit: 055af0235aef8110a1c44f5fc04c5c206e9e58fb [31/70] drm/vc4: dpi: Switch to drmm_of_get_bridge
config: mips-randconfig-r025-20220717 (https://download.01.org/0day-ci/archive/20220718/202207180030.CoXPUpOx-lkp@intel.com/config)
compiler: mipsel-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
git remote add kraxel git://git.kraxel.org/linux
git fetch --no-tags kraxel drm-qemu-next
git checkout 055af0235aef8110a1c44f5fc04c5c206e9e58fb
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash drivers/gpu/drm/vc4/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All error/warnings (new ones prefixed by >>):

drivers/gpu/drm/vc4/vc4_dpi.c: In function 'vc4_dpi_init_bridge':
>> drivers/gpu/drm/vc4/vc4_dpi.c:247:18: error: implicit declaration of function 'drmm_of_get_bridge'; did you mean 'devm_drm_of_get_bridge'? [-Werror=implicit-function-declaration]
247 | bridge = drmm_of_get_bridge(drm, dev->of_node, 0, 0);
| ^~~~~~~~~~~~~~~~~~
| devm_drm_of_get_bridge
>> drivers/gpu/drm/vc4/vc4_dpi.c:247:16: warning: assignment to 'struct drm_bridge *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
247 | bridge = drmm_of_get_bridge(drm, dev->of_node, 0, 0);
| ^
cc1: some warnings being treated as errors


vim +247 drivers/gpu/drm/vc4/vc4_dpi.c

237
238 /* Sets up the next link in the display chain, whether it's a panel or
239 * a bridge.
240 */
241 static int vc4_dpi_init_bridge(struct vc4_dpi *dpi)
242 {
243 struct drm_device *drm = dpi->encoder.base.dev;
244 struct device *dev = &dpi->pdev->dev;
245 struct drm_bridge *bridge;
246
> 247 bridge = drmm_of_get_bridge(drm, dev->of_node, 0, 0);
248 if (IS_ERR(bridge)) {
249 /* If nothing was connected in the DT, that's not an
250 * error.
251 */
252 if (PTR_ERR(bridge) == -ENODEV)
253 return 0;
254 else
255 return PTR_ERR(bridge);
256 }
257
258 return drm_bridge_attach(&dpi->encoder.base, bridge, NULL, 0);
259 }
260

--
0-DAY CI Kernel Test Service
https://01.org/lkp

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