tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-5.4 head: 52d269f32500581166246e0e494b2b62d979dba6 commit: 1dee2dc6478516fd89eb0a92c28dfcd5980f3f8e [51/243] CHROMIUM: media: mtk-vcodec: Refactor get cap buffer and put cap buffer to disp flow config: csky-randconfig-r031-20210420 (attached as .config) compiler: csky-linux-gcc (GCC) 9.3.0 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 chrome-os https://chromium.googlesource.com/chromiumos/third_party/kernel git fetch --no-tags chrome-os chromeos-5.4 git checkout 1dee2dc6478516fd89eb0a92c28dfcd5980f3f8e # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=csky If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): In file included from include/linux/kernel.h:11, from include/linux/list.h:9, from include/linux/preempt.h:11, from include/linux/spinlock.h:51, from include/linux/seqlock.h:36, from include/linux/time.h:6, from include/linux/videodev2.h:59, from include/media/videobuf2-v4l2.h:15, from drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_stateless.c:3: include/asm-generic/fixmap.h: In function 'fix_to_virt': include/asm-generic/fixmap.h:32:19: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] 32 | BUILD_BUG_ON(idx >= __end_of_fixed_addresses); | ^~ include/linux/compiler.h:397:9: note: in definition of macro '__compiletime_assert' 397 | if (!(condition)) \ | ^~~~~~~~~ include/linux/compiler.h:417:2: note: in expansion of macro '_compiletime_assert' 417 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert' 39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) | ^~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:50:2: note: in expansion of macro 'BUILD_BUG_ON_MSG' 50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition) | ^~~~~~~~~~~~~~~~ include/asm-generic/fixmap.h:32:2: note: in expansion of macro 'BUILD_BUG_ON' 32 | BUILD_BUG_ON(idx >= __end_of_fixed_addresses); | ^~~~~~~~~~~~ drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_stateless.c: In function 'vb2ops_vdec_stateless_buf_queue': 352 | struct mtk_video_dec_buf *dec_buf; | ^~~~~~~ vim +/dec_buf +352 drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_stateless.c 347 348 static void vb2ops_vdec_stateless_buf_queue(struct vb2_buffer *vb) 349 { 350 struct mtk_vcodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); 351 struct vb2_v4l2_buffer *vb2_v4l2 = to_vb2_v4l2_buffer(vb); 353 354 mtk_v4l2_debug(3, "[%d] (%d) id=%d, vb=%p", 355 ctx->id, vb->vb2_queue->type, 356 vb->index, vb); 357 358 dec_buf = container_of(vb2_v4l2, struct mtk_video_dec_buf, m2m_buf.vb); 359 mutex_lock(&ctx->lock); 360 v4l2_m2m_buf_queue(ctx->m2m_ctx, vb2_v4l2); 361 mutex_unlock(&ctx->lock); 362 if (vb->vb2_queue->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 363 return; 364 365 mtk_v4l2_debug(3, "(%d) id=%d, bs=%p", 366 vb->vb2_queue->type, vb->index, dec_buf); 367 368 /* If an OUTPUT buffer, we may need to update the state */ 369 if (ctx->state == MTK_STATE_INIT) { 370 ctx->state = MTK_STATE_HEADER; 371 mtk_v4l2_debug(1, "Init driver from init to header."); 372 } else { 373 mtk_v4l2_debug(3, "[%d] already init driver %d", 374 ctx->id, ctx->state); 375 } 376 } 377 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org