Hi Laurent, I love your patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.7-rc4] [cannot apply to linuxtv-media/master anholt/for-next next-20200505] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Laurent-Pinchart/Drivers-for-the-BCM283x-CSI-2-CCP2-receiver-and-ISP/20200505-054310 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 9851a0dee7c28514f149f7e4f60ec1b06286cc1b reproduce: # apt-get install sparse # sparse version: v0.6.1-191-gc51a0382-dirty make ARCH=x86_64 allmodconfig make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' :::::: branch date: 17 hours ago :::::: commit date: 17 hours ago If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> drivers/staging/vc04_services/vc-sm-cma/vc_sm.h:60:21: sparse: sparse: dubious one-bit signed bitfield drivers/staging/vc04_services/vc-sm-cma/vc_sm.h:61:23: sparse: sparse: dubious one-bit signed bitfield drivers/staging/vc04_services/vc-sm-cma/vc_sm.c:1265:24: sparse: sparse: undefined identifier 'dmac_flush_range' -- >> drivers/staging/vc04_services/vc-sm-cma/vc_sm_cma_vchi.c:474:55: sparse: sparse: Using plain integer as NULL pointer drivers/staging/vc04_services/vc-sm-cma/vc_sm_cma_vchi.c:503:59: sparse: sparse: Using plain integer as NULL pointer # https://github.com/0day-ci/linux/commit/5f041a24bca6d9babfbb0e35b8e2f7cea4cf933b git remote add linux-review https://github.com/0day-ci/linux git remote update linux-review git checkout 5f041a24bca6d9babfbb0e35b8e2f7cea4cf933b vim +60 drivers/staging/vc04_services/vc-sm-cma/vc_sm.h 5f041a24bca6d9 Dave Stevenson 2020-05-04 43 5f041a24bca6d9 Dave Stevenson 2020-05-04 44 struct vc_sm_buffer { 5f041a24bca6d9 Dave Stevenson 2020-05-04 45 struct list_head global_buffer_list; /* Global list of buffers. */ 5f041a24bca6d9 Dave Stevenson 2020-05-04 46 5f041a24bca6d9 Dave Stevenson 2020-05-04 47 /* Index in the kernel_id idr so that we can find the 5f041a24bca6d9 Dave Stevenson 2020-05-04 48 * mmal_msg_context again when servicing the VCHI reply. 5f041a24bca6d9 Dave Stevenson 2020-05-04 49 */ 5f041a24bca6d9 Dave Stevenson 2020-05-04 50 int kernel_id; 5f041a24bca6d9 Dave Stevenson 2020-05-04 51 5f041a24bca6d9 Dave Stevenson 2020-05-04 52 size_t size; 5f041a24bca6d9 Dave Stevenson 2020-05-04 53 5f041a24bca6d9 Dave Stevenson 2020-05-04 54 /* Lock over all the following state for this buffer */ 5f041a24bca6d9 Dave Stevenson 2020-05-04 55 struct mutex lock; 5f041a24bca6d9 Dave Stevenson 2020-05-04 56 struct list_head attachments; 5f041a24bca6d9 Dave Stevenson 2020-05-04 57 5f041a24bca6d9 Dave Stevenson 2020-05-04 58 char name[VC_SM_MAX_NAME_LEN]; 5f041a24bca6d9 Dave Stevenson 2020-05-04 59 5f041a24bca6d9 Dave Stevenson 2020-05-04 @60 int in_use:1; /* Kernel is still using this resource */ 5f041a24bca6d9 Dave Stevenson 2020-05-04 61 int imported:1; /* Imported dmabuf */ 5f041a24bca6d9 Dave Stevenson 2020-05-04 62 5f041a24bca6d9 Dave Stevenson 2020-05-04 63 enum vc_sm_vpu_mapping_state vpu_state; 5f041a24bca6d9 Dave Stevenson 2020-05-04 64 u32 vc_handle; /* VideoCore handle for this buffer */ 5f041a24bca6d9 Dave Stevenson 2020-05-04 65 int vpu_allocated; /* 5f041a24bca6d9 Dave Stevenson 2020-05-04 66 * The VPU made this allocation. Release the 5f041a24bca6d9 Dave Stevenson 2020-05-04 67 * local dma_buf when the VPU releases the 5f041a24bca6d9 Dave Stevenson 2020-05-04 68 * resource. 5f041a24bca6d9 Dave Stevenson 2020-05-04 69 */ 5f041a24bca6d9 Dave Stevenson 2020-05-04 70 5f041a24bca6d9 Dave Stevenson 2020-05-04 71 /* DMABUF related fields */ 5f041a24bca6d9 Dave Stevenson 2020-05-04 72 struct dma_buf *dma_buf; 5f041a24bca6d9 Dave Stevenson 2020-05-04 73 dma_addr_t dma_addr; 5f041a24bca6d9 Dave Stevenson 2020-05-04 74 void *cookie; 5f041a24bca6d9 Dave Stevenson 2020-05-04 75 5f041a24bca6d9 Dave Stevenson 2020-05-04 76 struct vc_sm_privdata_t *private; 5f041a24bca6d9 Dave Stevenson 2020-05-04 77 5f041a24bca6d9 Dave Stevenson 2020-05-04 78 union { 5f041a24bca6d9 Dave Stevenson 2020-05-04 79 struct vc_sm_alloc_data alloc; 5f041a24bca6d9 Dave Stevenson 2020-05-04 80 struct vc_sm_imported import; 5f041a24bca6d9 Dave Stevenson 2020-05-04 81 }; 5f041a24bca6d9 Dave Stevenson 2020-05-04 82 }; 5f041a24bca6d9 Dave Stevenson 2020-05-04 83 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
