Hi Uma, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on drm-intel/for-linux-next] [also build test WARNING on v4.20-rc4 next-20181127] [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/Uma-Shankar/Add-Colorspace-connector-property-interface/20181128-083317 base: git://anongit.freedesktop.org/drm-intel for-linux-next config: x86_64-randconfig-x017-201847 (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings All warnings (new ones prefixed by >>): drivers/gpu/drm/drm_connector.c: In function 'drm_mode_create_colorspace_property': >> drivers/gpu/drm/drm_connector.c:1459:33: warning: 'prop' may be used uninitialized in this function [-Wmaybe-uninitialized] connector->colorspace_property = prop; ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~ vim +/prop +1459 drivers/gpu/drm/drm_connector.c 1427 1428 /** 1429 * drm_mode_create_colorspace_property - create colorspace property 1430 * Colorspace: 1431 * This property helps select a suitable colorspace based on the sink 1432 * capability. Modern sink devices support wider gamut like BT2020. 1433 * This helps switch to BT2020 mode if the BT2020 encoded video stream 1434 * is being played by the user, same for any other colorspace. 1435 * @connector: connector to set property on. 1436 * 1437 * Called by a driver the first time it's needed, must be attached to desired 1438 * connectors. 1439 * 1440 * Returns: 1441 * Zero on success, negative errno on failure. 1442 */ 1443 int drm_mode_create_colorspace_property(struct drm_connector *connector) 1444 { 1445 struct drm_device *dev = connector->dev; 1446 struct drm_property *prop; 1447 1448 if (connector->connector_type == DRM_MODE_CONNECTOR_HDMIA || 1449 connector->connector_type == DRM_MODE_CONNECTOR_HDMIB) { 1450 1451 prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM, 1452 "Colorspace", 1453 hdmi_colorspace, 1454 ARRAY_SIZE(hdmi_colorspace)); 1455 if (!prop) 1456 return -ENOMEM; 1457 } 1458 > 1459 connector->colorspace_property = prop; 1460 1461 return 0; 1462 } 1463 EXPORT_SYMBOL(drm_mode_create_colorspace_property); 1464 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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