Hi Philipp, I love your patch! Perhaps something to improve: [auto build test WARNING on linuxtv-media/master] [cannot apply to v5.3-rc8 next-20190904] [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/Philipp-Zabel/media-imx-enable-V4L2_PIX_FMT_XBGR32-_BGRX32-and-_RGBX32/20190914-085415 base: git://linuxtv.org/media_tree.git master config: ia64-allmodconfig (attached as .config) compiler: ia64-linux-gcc (GCC) 7.4.0 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 GCC_VERSION=7.4.0 make.cross ARCH=ia64 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings All warnings (new ones prefixed by >>): drivers/staging/media/imx/imx-media-utils.c: In function 'find_format': drivers/staging/media/imx/imx-media-utils.c:232:40: warning: comparison between 'const enum ipu_color_space' and 'enum codespace_sel' [-Wenum-compare] if ((cs_sel != CS_SEL_ANY && fmt->cs != cs_sel) || ^~ drivers/staging/media/imx/imx-media-utils.c: In function 'enum_format': drivers/staging/media/imx/imx-media-utils.c:262:40: warning: comparison between 'const enum ipu_color_space' and 'enum codespace_sel' [-Wenum-compare] if ((cs_sel != CS_SEL_ANY && fmt->cs != cs_sel) || ^~ >> drivers/staging/media/imx/imx-media-utils.c:257:18: warning: 'j' may be used uninitialized in this function [-Wmaybe-uninitialized] unsigned int i, j, k = 0; ^ vim +/j +257 drivers/staging/media/imx/imx-media-utils.c 218 219 static const 220 struct imx_media_pixfmt *find_format(u32 fourcc, 221 u32 code, 222 enum codespace_sel cs_sel, 223 bool allow_non_mbus, 224 bool allow_bayer) 225 { 226 const struct imx_media_pixfmt *fmt; 227 int i, j; 228 229 for (i = 0; i < ARRAY_SIZE(pixel_formats); i++) { 230 fmt = &pixel_formats[i]; 231 > 232 if ((cs_sel != CS_SEL_ANY && fmt->cs != cs_sel) || 233 (!allow_non_mbus && !fmt->codes[0]) || 234 (!allow_bayer && fmt->bayer)) 235 continue; 236 237 if (fourcc && fmt->fourcc == fourcc) 238 return fmt; 239 240 if (!code) 241 continue; 242 243 for (j = 0; j < ARRAY_SIZE(fmt->codes) && fmt->codes[j]; j++) { 244 if (code == fmt->codes[j]) 245 return fmt; 246 } 247 } 248 return NULL; 249 } 250 251 static int enum_format(u32 *fourcc, u32 *code, u32 index, 252 enum codespace_sel cs_sel, 253 bool allow_non_mbus, 254 bool allow_bayer) 255 { 256 const struct imx_media_pixfmt *fmt; > 257 unsigned int i, j, k = 0; 258 259 for (i = 0; i < ARRAY_SIZE(pixel_formats); i++) { 260 fmt = &pixel_formats[i]; 261 262 if ((cs_sel != CS_SEL_ANY && fmt->cs != cs_sel) || 263 (!allow_non_mbus && !fmt->codes[0]) || 264 (!allow_bayer && fmt->bayer)) 265 continue; 266 267 if (fourcc && index == k) 268 break; 269 270 if (!code) { 271 k++; 272 continue; 273 } 274 275 for (j = 0; j < ARRAY_SIZE(fmt->codes) && fmt->codes[j]; j++) { 276 if (index == k) 277 goto out; 278 279 k++; 280 } 281 } 282 if (i == ARRAY_SIZE(pixel_formats)) 283 return -EINVAL; 284 285 out: 286 if (fourcc) 287 *fourcc = fmt->fourcc; 288 if (code) 289 *code = fmt->codes[j]; 290 291 return 0; 292 } 293 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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