Hi Tiffany, I get a bunch of warnings when I compile the decoder driver in my daily build setup: /home/hans/work/build/media-git/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_if.c: In function 'put_fb_to_free': /home/hans/work/build/media-git/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_if.c:242:47: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] list->fb_list[list->write_idx].vdec_fb_va = (u64)fb; ^ /home/hans/work/build/media-git/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_if.c: In function 'vdec_h264_decode': /home/hans/work/build/media-git/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_if.c:353:24: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] uint64_t vdec_fb_va = (u64)fb; ^ /home/hans/work/build/media-git/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_if.c: In function 'vdec_h264_get_fb': /home/hans/work/build/media-git/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_if.c:446:7: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] fb = (struct vdec_fb *)list->fb_list[list->read_idx].vdec_fb_va; ^ /home/hans/work/build/media-git/drivers/media/platform/mtk-vcodec/vdec/vdec_vp9_if.c: In function 'vdec_vp9_decode': /home/hans/work/build/media-git/drivers/media/platform/mtk-vcodec/vdec/vdec_vp9_if.c:794:37: warning: format '%ld' expects argument of type 'long int', but argument 4 has type 'size_t {aka unsigned int}' [-Wformat=] mtk_vcodec_debug(inst, "Input BS Size = %ld", bs->size); ^ ^^^^^^ Should be %zu. /home/hans/work/build/media-git/drivers/media/platform/mtk-vcodec/vdec_vpu_if.c: In function 'handle_init_ack_msg': /home/hans/work/build/media-git/drivers/media/platform/mtk-vcodec/vdec_vpu_if.c:22:30: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] struct vdec_vpu_inst *vpu = (struct vdec_vpu_inst *)msg->ap_inst_addr; ^ /home/hans/work/build/media-git/drivers/media/platform/mtk-vcodec/vdec_vpu_if.c: In function 'vpu_dec_ipi_handler': /home/hans/work/build/media-git/drivers/media/platform/mtk-vcodec/vdec_vpu_if.c:41:30: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] struct vdec_vpu_inst *vpu = (struct vdec_vpu_inst *)msg->ap_inst_addr; ^ sparse: ERRORS /home/hans/work/build/media-git/drivers/media/platform/mtk-vcodec/vdec/vdec_vp8_if.c:404:16: error: undefined identifier 'kzalloc' /home/hans/work/build/media-git/drivers/media/platform/mtk-vcodec/vdec/vdec_vp8_if.c:436:9: error: undefined identifier 'kfree' /home/hans/work/build/media-git/drivers/media/platform/mtk-vcodec/vdec/vdec_vp8_if.c:618:9: error: undefined identifier 'kfree' /home/hans/work/build/media-git/drivers/media/platform/mtk-vcodec/vdec/vdec_vp8_if.c:404:9: error: implicit declaration of function 'kzalloc' [-Werror=implicit-function-declaration] /home/hans/work/build/media-git/drivers/media/platform/mtk-vcodec/vdec/vdec_vp8_if.c:404:7: warning: assignment makes pointer from integer without a cast [-Wint-conversion] /home/hans/work/build/media-git/drivers/media/platform/mtk-vcodec/vdec/vdec_vp8_if.c:436:2: error: implicit declaration of function 'kfree' [-Werror=implicit-function-declaration] ^^^^ Apparently a slab.h include is missing here that breaks building it with sparse. Can you look at these and provide a patch fixing these? I'll fold it in the patch series. Regards, Hans -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html