/* * video_device_test - Video Device Test * * Copyright (c) 2016 Shuah Khan * Copyright (c) 2016 Samsung Electronics Co., Ltd. * * This file is released under the GPLv2. */ /* * This file adds a test for Video Device. This test should not be included * in the Kselftest run. This test should be run when hardware and driver * that makes use of V4L2 API is present. * * This test opens user specified Video Device and calls video ioctls in a * loop once every 10 seconds. * * Usage: * sudo ./video_device_test -d /dev/videoX * * While test is running, remove the device or unbind the driver and * ensure there are no use after free errors and other Oops in the * dmesg. * When possible, enable KaSan kernel config option for use-after-free * error detection. */ #include #include #include #include #include #include #include #include #include #include int main(int argc, char **argv) { int opt; char video_dev[256]; int count; struct v4l2_tuner vtuner; struct v4l2_capability vcap; int ret; int fd; if (argc < 2) { printf("Usage: %s [-d ]\n", argv[0]); exit(-1); } /* Process arguments */ while ((opt = getopt(argc, argv, "d:")) != -1) { switch (opt) { case 'd': strncpy(video_dev, optarg, sizeof(video_dev) - 1); video_dev[sizeof(video_dev)-1] = '\0'; break; default: printf("Usage: %s [-d ]\n", argv[0]); exit(-1); } } /* Generate random number of interations */ srand((unsigned int) time(NULL)); count = rand(); /* Open Video device and keep it open */ fd = open(video_dev, O_RDWR); if (fd == -1) { printf("Video Device open errno %s\n", strerror(errno)); exit(-1); } printf("\nNote:\n" "While test is running, remove the device or unbind\n" "driver and ensure there are no use after free errors\n" "and other Oops in the dmesg. When possible, enable KaSan\n" "kernel config option for use-after-free error detection.\n\n"); while (count > 0) { ret = ioctl(fd, VIDIOC_QUERYCAP, &vcap); if (ret < 0) printf("VIDIOC_QUERYCAP errno %s\n", strerror(errno)); else printf("Video device driver %s\n", vcap.driver); ret = ioctl(fd, VIDIOC_G_TUNER, &vtuner); if (ret < 0) printf("VIDIOC_G_TUNER, errno %s\n", strerror(errno)); else printf("type %d rangelow %d rangehigh %d\n", vtuner.type, vtuner.rangelow, vtuner.rangehigh); sleep(10); count--; } } inux/net-next.git/commit/?id=295070e9aa015abb9b92cccfbb1e43954e938133'>root/net/iucv
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authorLinus Walleij <linus.walleij@linaro.org>2016-11-12 15:22:38 +0100
committerMark Brown <broonie@kernel.org>2016-11-13 09:22:37 +0000
commit295070e9aa015abb9b92cccfbb1e43954e938133 (patch)
treed0a08e7ce280bc877e22424437dbe59fa1857d9a /net/iucv
parent1001354ca34179f3db924eb66672442a173147dc (diff)
regulator: stw481x-vmmc: fix ages old enable error
The regulator has never been properly enabled, it has been dormant all the time. It's strange that MMC was working at all, but it likely worked by the signals going through the levelshifter and reaching the card anyways. Fixes: 3615a34ea1a6 ("regulator: add STw481x VMMC driver") Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
Diffstat (limited to 'net/iucv')
aae1e7a682'>Diffstat (limited to 'sound/pci/ymfpci')