Hi Philipp, I love your patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v4.18-rc1 next-20180622] [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/Philipp-Zabel/i-MX-media-mem2mem-scaler/20180623-024533 config: ia64-allmodconfig (attached as .config) compiler: ia64-linux-gcc (GCC) 8.1.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=8.1.0 make.cross ARCH=ia64 All warnings (new ones prefixed by >>): drivers/staging/media/imx/imx-media-mem2mem.c: In function 'vidioc_querycap': >> drivers/staging/media/imx/imx-media-mem2mem.c:160:2: warning: 'strncpy' output truncated copying 15 bytes from a string of length 17 [-Wstringop-truncation] strncpy(cap->driver, "imx-media-mem2mem", sizeof(cap->driver) - 1); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/strncpy +160 drivers/staging/media/imx/imx-media-mem2mem.c 153 154 /* 155 * Video ioctls 156 */ 157 static int vidioc_querycap(struct file *file, void *priv, 158 struct v4l2_capability *cap) 159 { > 160 strncpy(cap->driver, "imx-media-mem2mem", sizeof(cap->driver) - 1); 161 strncpy(cap->card, "imx-media-mem2mem", sizeof(cap->card) - 1); 162 strncpy(cap->bus_info, "platform:imx-media-mem2mem", 163 sizeof(cap->bus_info) - 1); 164 cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING; 165 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; 166 167 return 0; 168 } 169 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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