Hi Sakari, FYI, the error/warning still remains. tree: git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git ti-linux-5.10.y head: 6baa440211758789c37226e1b7ca154ce90f8be8 commit: d42003cd0440e21c8940801e58ba2aabf3dc13b6 [7172/9762] media: entity: Use pad as the starting point for a pipeline config: i386-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): git remote add ti git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git git fetch --no-tags ti ti-linux-5.10.y git checkout d42003cd0440e21c8940801e58ba2aabf3dc13b6 # save the attached .config to linux build tree make W=1 ARCH=i386 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/pci/intel/ipu3/ipu3-cio2.c: In function 'cio2_vb2_start_streaming': 983 | r = media_pipeline_start(&q->vdev.entity, &q->pipe); | ^~~~~~~~~~~~~~~ | | | struct media_entity * In file included from include/media/media-device.h:18, from include/media/media-request.h:20, from include/media/v4l2-ctrls.h:14, from drivers/media/pci/intel/ipu3/ipu3-cio2.c:23: include/media/media-entity.h:948:57: note: expected 'struct media_pad *' but argument is of type 'struct media_entity *' 948 | __must_check int media_pipeline_start(struct media_pad *pad, | ~~~~~~~~~~~~~~~~~~^~~ 1003 | media_pipeline_stop(&q->vdev.entity); | ^~~~~~~~~~~~~~~ | | | struct media_entity * In file included from include/media/media-device.h:18, from include/media/media-request.h:20, from include/media/v4l2-ctrls.h:14, from drivers/media/pci/intel/ipu3/ipu3-cio2.c:23: include/media/media-entity.h:972:44: note: expected 'struct media_pad *' but argument is of type 'struct media_entity *' 972 | void media_pipeline_stop(struct media_pad *pad); | ~~~~~~~~~~~~~~~~~~^~~ drivers/media/pci/intel/ipu3/ipu3-cio2.c: In function 'cio2_vb2_stop_streaming': drivers/media/pci/intel/ipu3/ipu3-cio2.c:1024:22: error: passing argument 1 of 'media_pipeline_stop' from incompatible pointer type [-Werror=incompatible-pointer-types] 1024 | media_pipeline_stop(&q->vdev.entity); | ^~~~~~~~~~~~~~~ | | | struct media_entity * In file included from include/media/media-device.h:18, from include/media/media-request.h:20, from include/media/v4l2-ctrls.h:14, from drivers/media/pci/intel/ipu3/ipu3-cio2.c:23: include/media/media-entity.h:972:44: note: expected 'struct media_pad *' but argument is of type 'struct media_entity *' 972 | void media_pipeline_stop(struct media_pad *pad); | ~~~~~~~~~~~~~~~~~~^~~ cc1: some warnings being treated as errors vim +/media_pipeline_start +983 drivers/media/pci/intel/ipu3/ipu3-cio2.c c2a6a07afe4a46 Yong Zhi 2017-11-08 966 c2a6a07afe4a46 Yong Zhi 2017-11-08 967 static int cio2_vb2_start_streaming(struct vb2_queue *vq, unsigned int count) c2a6a07afe4a46 Yong Zhi 2017-11-08 968 { c2a6a07afe4a46 Yong Zhi 2017-11-08 969 struct cio2_queue *q = vb2q_to_cio2_queue(vq); c2a6a07afe4a46 Yong Zhi 2017-11-08 970 struct cio2_device *cio2 = vb2_get_drv_priv(vq); c2a6a07afe4a46 Yong Zhi 2017-11-08 971 int r; c2a6a07afe4a46 Yong Zhi 2017-11-08 972 c2a6a07afe4a46 Yong Zhi 2017-11-08 973 cio2->cur_queue = q; c2a6a07afe4a46 Yong Zhi 2017-11-08 974 atomic_set(&q->frame_sequence, 0); c2a6a07afe4a46 Yong Zhi 2017-11-08 975 c2a6a07afe4a46 Yong Zhi 2017-11-08 976 r = pm_runtime_get_sync(&cio2->pci_dev->dev); c2a6a07afe4a46 Yong Zhi 2017-11-08 977 if (r < 0) { c2a6a07afe4a46 Yong Zhi 2017-11-08 978 dev_info(&cio2->pci_dev->dev, "failed to set power %d\n", r); c2a6a07afe4a46 Yong Zhi 2017-11-08 979 pm_runtime_put_noidle(&cio2->pci_dev->dev); c2a6a07afe4a46 Yong Zhi 2017-11-08 980 return r; c2a6a07afe4a46 Yong Zhi 2017-11-08 981 } c2a6a07afe4a46 Yong Zhi 2017-11-08 982 c2a6a07afe4a46 Yong Zhi 2017-11-08 @983 r = media_pipeline_start(&q->vdev.entity, &q->pipe); c2a6a07afe4a46 Yong Zhi 2017-11-08 984 if (r) c2a6a07afe4a46 Yong Zhi 2017-11-08 985 goto fail_pipeline; c2a6a07afe4a46 Yong Zhi 2017-11-08 986 c2a6a07afe4a46 Yong Zhi 2017-11-08 987 r = cio2_hw_init(cio2, q); c2a6a07afe4a46 Yong Zhi 2017-11-08 988 if (r) c2a6a07afe4a46 Yong Zhi 2017-11-08 989 goto fail_hw; c2a6a07afe4a46 Yong Zhi 2017-11-08 990 c2a6a07afe4a46 Yong Zhi 2017-11-08 991 /* Start streaming on sensor */ c2a6a07afe4a46 Yong Zhi 2017-11-08 992 r = v4l2_subdev_call(q->sensor, video, s_stream, 1); c2a6a07afe4a46 Yong Zhi 2017-11-08 993 if (r) c2a6a07afe4a46 Yong Zhi 2017-11-08 994 goto fail_csi2_subdev; c2a6a07afe4a46 Yong Zhi 2017-11-08 995 c2a6a07afe4a46 Yong Zhi 2017-11-08 996 cio2->streaming = true; c2a6a07afe4a46 Yong Zhi 2017-11-08 997 c2a6a07afe4a46 Yong Zhi 2017-11-08 998 return 0; c2a6a07afe4a46 Yong Zhi 2017-11-08 999 c2a6a07afe4a46 Yong Zhi 2017-11-08 1000 fail_csi2_subdev: c2a6a07afe4a46 Yong Zhi 2017-11-08 1001 cio2_hw_exit(cio2, q); c2a6a07afe4a46 Yong Zhi 2017-11-08 1002 fail_hw: c2a6a07afe4a46 Yong Zhi 2017-11-08 @1003 media_pipeline_stop(&q->vdev.entity); c2a6a07afe4a46 Yong Zhi 2017-11-08 1004 fail_pipeline: c2a6a07afe4a46 Yong Zhi 2017-11-08 1005 dev_dbg(&cio2->pci_dev->dev, "failed to start streaming (%d)\n", r); dcd80955a0a13d Yong Zhi 2018-01-03 1006 cio2_vb2_return_all_buffers(q, VB2_BUF_STATE_QUEUED); c2a6a07afe4a46 Yong Zhi 2017-11-08 1007 pm_runtime_put(&cio2->pci_dev->dev); c2a6a07afe4a46 Yong Zhi 2017-11-08 1008 c2a6a07afe4a46 Yong Zhi 2017-11-08 1009 return r; c2a6a07afe4a46 Yong Zhi 2017-11-08 1010 } c2a6a07afe4a46 Yong Zhi 2017-11-08 1011 :::::: The code at line 983 was first introduced by commit :::::: c2a6a07afe4a466896c250cbb203657162b86f4b media: intel-ipu3: cio2: add new MIPI-CSI2 driver :::::: TO: Yong Zhi <yong.zhi(a)intel.com&gt; :::::: CC: Mauro Carvalho Chehab <mchehab(a)s-opensource.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org