Hi Shashank, [auto build test WARNING on drm-intel/for-linux-next] [also build test WARNING on v4.12-rc5 next-20170616] [cannot apply to drm/drm-next] [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/Shashank-Sharma/HDMI-YCBCR-output-handling-in-DRM-layer/20170617-023229 base: git://anongit.freedesktop.org/drm-intel for-linux-next config: i386-randconfig-x070-06120530 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=i386 All warnings (new ones prefixed by >>): In file included from drivers/gpu/drm/drm_edid.c:30:0: drivers/gpu/drm/drm_edid.c: In function 'drm_parse_y420cmdb_bitmap': include/linux/kernel.h:40:18: warning: large integer implicitly truncated to unsigned type [-Woverflow] #define U64_MAX ((u64)~0ULL) ^ >> drivers/gpu/drm/drm_edid.c:3630:28: note: in expansion of macro 'U64_MAX' hdmi->ycbcr420_vcb_map = U64_MAX; ^~~~~~~ vim +/U64_MAX +3630 drivers/gpu/drm/drm_edid.c 3614 for ((i) = (start); (i) < (end) && (i) + cea_db_payload_len(&(cea)[(i)]) < (end); (i) += cea_db_payload_len(&(cea)[(i)]) + 1) 3615 3616 static void drm_parse_y420cmdb_bitmap(struct drm_connector *connector, 3617 const u8 *db) 3618 { 3619 struct drm_display_info *info = &connector->display_info; 3620 struct drm_hdmi_info *hdmi = &info->hdmi; 3621 u8 map_len = cea_db_payload_len(db) - 1; 3622 u8 count; 3623 u64 map = 0; 3624 3625 if (!db) 3626 return; 3627 3628 if (map_len == 0) { 3629 /* All CEA modes support ycbcr420 sampling also.*/ > 3630 hdmi->ycbcr420_vcb_map = U64_MAX; 3631 info->color_formats |= DRM_COLOR_FORMAT_YCRCB420; 3632 return; 3633 } 3634 3635 /* 3636 * This map indicates which of the existing CEA block modes 3637 * from VDB can support YCBCR420 output too. So if bit=0 is 3638 * set, first mode from VDB can support YCBCR420 output too. --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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