Hi Hugues, [auto build test WARNING on linuxtv-media/master] [also build test WARNING on v4.13-rc2 next-20170728] [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/Hugues-Fruchet/STM32-DCMI-camera-interface-crop-support/20170730-114803 base: git://linuxtv.org/media_tree.git master config: powerpc-allmodconfig (attached as .config) compiler: powerpc64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705 reproduce: wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=powerpc 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/media//platform/stm32/stm32-dcmi.c: In function 'dcmi_graph_notify_complete': >> drivers/media//platform/stm32/stm32-dcmi.c:1445:5: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized] if (ret) { ^ vim +/ret +1445 drivers/media//platform/stm32/stm32-dcmi.c 1431 1432 static int dcmi_graph_notify_complete(struct v4l2_async_notifier *notifier) 1433 { 1434 struct stm32_dcmi *dcmi = notifier_to_dcmi(notifier); 1435 int ret; 1436 1437 dcmi->vdev->ctrl_handler = dcmi->entity.subdev->ctrl_handler; 1438 ret = dcmi_formats_init(dcmi); 1439 if (ret) { 1440 dev_err(dcmi->dev, "No supported mediabus format found\n"); 1441 return ret; 1442 } 1443 1444 ret = dcmi_framesizes_init(dcmi); > 1445 if (ret) { 1446 dev_err(dcmi->dev, "Could not initialize framesizes\n"); 1447 return ret; 1448 } 1449 1450 ret = dcmi_get_sensor_bounds(dcmi, &dcmi->sd_bounds); 1451 if (ret) { 1452 dev_err(dcmi->dev, "Could not get sensor bounds\n"); 1453 return ret; 1454 } 1455 1456 ret = dcmi_set_default_fmt(dcmi); 1457 if (ret) { 1458 dev_err(dcmi->dev, "Could not set default format\n"); 1459 return ret; 1460 } 1461 1462 ret = video_register_device(dcmi->vdev, VFL_TYPE_GRABBER, -1); 1463 if (ret) { 1464 dev_err(dcmi->dev, "Failed to register video device\n"); 1465 return ret; 1466 } 1467 1468 dev_dbg(dcmi->dev, "Device registered as %s\n", 1469 video_device_node_name(dcmi->vdev)); 1470 return 0; 1471 } 1472 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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