Hi Jacopo, I love your patch! Yet something to improve: [auto build test ERROR on media-tree/master] [also build test ERROR on v5.16-rc5 next-20211215] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Jacopo-Mondi/media-adv748x-Add-C... base: git://linuxtv.org/media_tree.git master config: i386-randconfig-m031-20211216 (https://download.01.org/0day-ci/archive/20211217/202112171114.znOy3iE9-lk...) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/beac1be47b64ce291e1647699be3f26d8... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Jacopo-Mondi/media-adv748x-Add-CSI-2-VC-support/20211217-010519 git checkout beac1be47b64ce291e1647699be3f26d88028b3b # save the config file to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/media/i2c/adv748x/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/media/i2c/adv748x/adv748x-csi2.c: In function 'adv748x_csi2_init_cfg': 146 | struct v4l2_subdev_route routes[ADV748X_CSI2_STREAMS] = { | ^~~~~~ 148 | .sink_pad = ADV748X_CSI2_SINK, | ^ drivers/media/i2c/adv748x/adv748x-csi2.c:148:4: note: (near initialization for 'routes') drivers/media/i2c/adv748x/adv748x-csi2.c:149:4: error: field name not in record or union initializer 149 | .sink_stream = 0, | ^ drivers/media/i2c/adv748x/adv748x-csi2.c:149:4: note: (near initialization for 'routes') drivers/media/i2c/adv748x/adv748x-csi2.c:150:4: error: field name not in record or union initializer 150 | .source_pad = ADV748X_CSI2_SOURCE, | ^ drivers/media/i2c/adv748x/adv748x-csi2.c:150:4: note: (near initialization for 'routes') drivers/media/i2c/adv748x/adv748x-csi2.c:151:4: error: field name not in record or union initializer 151 | .source_stream = 0, | ^ drivers/media/i2c/adv748x/adv748x-csi2.c:151:4: note: (near initialization for 'routes') drivers/media/i2c/adv748x/adv748x-csi2.c:152:4: error: field name not in record or union initializer 152 | .flags = V4L2_SUBDEV_ROUTE_FL_ACTIVE, | ^ drivers/media/i2c/adv748x/adv748x-csi2.c:152:4: note: (near initialization for 'routes') 152 | .flags = V4L2_SUBDEV_ROUTE_FL_ACTIVE, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ | V4L2_SUBDEV_FORMAT_ACTIVE drivers/media/i2c/adv748x/adv748x-csi2.c:152:13: note: each undeclared identifier is reported only once for each function it appears in drivers/media/i2c/adv748x/adv748x-csi2.c:155:4: error: field name not in record or union initializer 155 | .sink_pad = ADV748X_CSI2_SINK, | ^ drivers/media/i2c/adv748x/adv748x-csi2.c:155:4: note: (near initialization for 'routes') drivers/media/i2c/adv748x/adv748x-csi2.c:156:4: error: field name not in record or union initializer 156 | .sink_stream = 0, | ^ drivers/media/i2c/adv748x/adv748x-csi2.c:156:4: note: (near initialization for 'routes') drivers/media/i2c/adv748x/adv748x-csi2.c:157:4: error: field name not in record or union initializer 157 | .source_pad = ADV748X_CSI2_SOURCE, | ^ drivers/media/i2c/adv748x/adv748x-csi2.c:157:4: note: (near initialization for 'routes') drivers/media/i2c/adv748x/adv748x-csi2.c:158:4: error: field name not in record or union initializer 158 | .source_stream = 1, | ^ drivers/media/i2c/adv748x/adv748x-csi2.c:158:4: note: (near initialization for 'routes') drivers/media/i2c/adv748x/adv748x-csi2.c:161:4: error: field name not in record or union initializer 161 | .sink_pad = ADV748X_CSI2_SINK, | ^ drivers/media/i2c/adv748x/adv748x-csi2.c:161:4: note: (near initialization for 'routes') drivers/media/i2c/adv748x/adv748x-csi2.c:162:4: error: field name not in record or union initializer 162 | .sink_stream = 0, | ^ drivers/media/i2c/adv748x/adv748x-csi2.c:162:4: note: (near initialization for 'routes') drivers/media/i2c/adv748x/adv748x-csi2.c:163:4: error: field name not in record or union initializer 163 | .source_pad = ADV748X_CSI2_SOURCE, | ^ drivers/media/i2c/adv748x/adv748x-csi2.c:163:4: note: (near initialization for 'routes') drivers/media/i2c/adv748x/adv748x-csi2.c:164:4: error: field name not in record or union initializer 164 | .source_stream = 2, | ^ drivers/media/i2c/adv748x/adv748x-csi2.c:164:4: note: (near initialization for 'routes') drivers/media/i2c/adv748x/adv748x-csi2.c:167:4: error: field name not in record or union initializer 167 | .sink_pad = ADV748X_CSI2_SINK, | ^ drivers/media/i2c/adv748x/adv748x-csi2.c:167:4: note: (near initialization for 'routes') drivers/media/i2c/adv748x/adv748x-csi2.c:168:4: error: field name not in record or union initializer 168 | .sink_stream = 0, | ^ drivers/media/i2c/adv748x/adv748x-csi2.c:168:4: note: (near initialization for 'routes') drivers/media/i2c/adv748x/adv748x-csi2.c:169:4: error: field name not in record or union initializer 169 | .source_pad = ADV748X_CSI2_SOURCE, | ^ drivers/media/i2c/adv748x/adv748x-csi2.c:169:4: note: (near initialization for 'routes') drivers/media/i2c/adv748x/adv748x-csi2.c:170:4: error: field name not in record or union initializer 170 | .source_stream = 3, | ^ drivers/media/i2c/adv748x/adv748x-csi2.c:170:4: note: (near initialization for 'routes') 173 | struct v4l2_subdev_krouting routing; | ^~~~~~~ 179 | v4l2_subdev_lock_state(state); | ^~~~~~~~~~~~~~~~~~~~~~ | v4l2_subdev_alloc_state 180 | ret = v4l2_subdev_set_routing(sd, state, &routing); | ^~~~~~~~~~~~~~~~~~~~~~~ | v4l2_subdev_notify 181 | v4l2_subdev_unlock_state(state); | ^~~~~~~~~~~~~~~~~~~~~~~~ | v4l2_subdev_alloc_state drivers/media/i2c/adv748x/adv748x-csi2.c:173:30: warning: unused variable 'routing' [-Wunused-variable] 173 | struct v4l2_subdev_krouting routing; | ^~~~~~~ drivers/media/i2c/adv748x/adv748x-csi2.c:146:27: warning: unused variable 'routes' [-Wunused-variable] 146 | struct v4l2_subdev_route routes[ADV748X_CSI2_STREAMS] = { | ^~~~~~ drivers/media/i2c/adv748x/adv748x-csi2.c: In function 'adv748x_csi2_init': 362 | V4L2_SUBDEV_FL_MULTIPLEXED, | ^~~~~~~~~~~~~~~~~~~~~~~~~~ 379 | ret = v4l2_subdev_init_finalize(&tx->sd); | ^~~~~~~~~~~~~~~~~~~~~~~~~ | v4l2_subdev_init 396 | v4l2_subdev_cleanup(&tx->sd); | ^~~~~~~~~~~~~~~~~~~ | v4l2_subdev_call cc1: some warnings being treated as errors vim +146 drivers/media/i2c/adv748x/adv748x-csi2.c 134 135 /* ----------------------------------------------------------------------------- 136 * v4l2_subdev_pad_ops 137 * 138 * The CSI2 bus pads are ignorant to the data sizes or formats. 139 * But we must support setting the pad formats for format propagation. 140 */ 141 142 static int adv748x_csi2_init_cfg(struct v4l2_subdev *sd, 143 struct v4l2_subdev_state *state) 144 { 145 /* One route for each virtual channel. Route 0 enabled by default. */ 147 { 149 .sink_stream = 0, 150 .source_pad = ADV748X_CSI2_SOURCE, 151 .source_stream = 0, 153 }, 154 { 155 .sink_pad = ADV748X_CSI2_SINK, 156 .sink_stream = 0, 157 .source_pad = ADV748X_CSI2_SOURCE, 158 .source_stream = 1, 159 }, 160 { 161 .sink_pad = ADV748X_CSI2_SINK, 162 .sink_stream = 0, 163 .source_pad = ADV748X_CSI2_SOURCE, 164 .source_stream = 2, 165 }, 166 { 167 .sink_pad = ADV748X_CSI2_SINK, 168 .sink_stream = 0, 169 .source_pad = ADV748X_CSI2_SOURCE, 170 .source_stream = 3, 171 }, 172 }; 174 int ret; 175 176 routing.num_routes = ADV748X_CSI2_STREAMS; 177 routing.routes = routes; 178 182 183 return ret; 184 } 185 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org