tree: git://git.ragnatech.se/linux media-tree head: 9746b11715c3949241e2d88cb9057da4adab7e02 commit: 9746b11715c3949241e2d88cb9057da4adab7e02 [359/359] media: i2c: Add imx334 camera sensor driver config: arm64-randconfig-r022-20210209 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c9439ca36342fb6013187d0a69aef92736951476) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu git remote add ragnatech git://git.ragnatech.se/linux git fetch --no-tags ragnatech media-tree git checkout 9746b11715c3949241e2d88cb9057da4adab7e02 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/media/i2c/imx334.c:793:55: warning: variable 'ret' is uninitialized when used here [-Wuninitialized] dev_err(imx334->dev, "failed to get reset gpio %d", ret); ^~~ include/linux/dev_printk.h:112:32: note: expanded from macro 'dev_err' _dev_err(dev, dev_fmt(fmt), ##__VA_ARGS__) ^~~~~~~~~~~ drivers/media/i2c/imx334.c:783:9: note: initialize the variable 'ret' to silence this warning int ret; ^ = 0 1 warning generated. vim +/ret +793 drivers/media/i2c/imx334.c 768 769 /** 770 * imx334_parse_hw_config() - Parse HW configuration and check if supported 771 * @imx334: pointer to imx334 device 772 * 773 * Return: 0 if successful, error code otherwise. 774 */ 775 static int imx334_parse_hw_config(struct imx334 *imx334) 776 { 777 struct fwnode_handle *fwnode = dev_fwnode(imx334->dev); 778 struct v4l2_fwnode_endpoint bus_cfg = { 779 .bus_type = V4L2_MBUS_CSI2_DPHY 780 }; 781 struct fwnode_handle *ep; 782 unsigned long rate; 783 int ret; 784 int i; 785 786 if (!fwnode) 787 return -ENXIO; 788 789 /* Request optional reset pin */ 790 imx334->reset_gpio = devm_gpiod_get_optional(imx334->dev, "reset", 791 GPIOD_OUT_LOW); 792 if (IS_ERR(imx334->reset_gpio)) { > 793 dev_err(imx334->dev, "failed to get reset gpio %d", ret); 794 return PTR_ERR(imx334->reset_gpio); 795 } 796 797 /* Get sensor input clock */ 798 imx334->inclk = devm_clk_get(imx334->dev, NULL); 799 if (IS_ERR(imx334->inclk)) { 800 dev_err(imx334->dev, "could not get inclk"); 801 return PTR_ERR(imx334->inclk); 802 } 803 804 rate = clk_get_rate(imx334->inclk); 805 if (rate != IMX334_INCLK_RATE) { 806 dev_err(imx334->dev, "inclk frequency mismatch"); 807 return -EINVAL; 808 } 809 810 ep = fwnode_graph_get_next_endpoint(fwnode, NULL); 811 if (!ep) 812 return -ENXIO; 813 814 ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg); 815 fwnode_handle_put(ep); 816 if (ret) 817 return ret; 818 819 if (bus_cfg.bus.mipi_csi2.num_data_lanes != IMX334_NUM_DATA_LANES) { 820 dev_err(imx334->dev, 821 "number of CSI2 data lanes %d is not supported", 822 bus_cfg.bus.mipi_csi2.num_data_lanes); 823 ret = -EINVAL; 824 goto done_endpoint_free; 825 } 826 827 if (!bus_cfg.nr_of_link_frequencies) { 828 dev_err(imx334->dev, "no link frequencies defined"); 829 ret = -EINVAL; 830 goto done_endpoint_free; 831 } 832 833 for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++) 834 if (bus_cfg.link_frequencies[i] == IMX334_LINK_FREQ) 835 goto done_endpoint_free; 836 837 ret = -EINVAL; 838 839 done_endpoint_free: 840 v4l2_fwnode_endpoint_free(&bus_cfg); 841 842 return ret; 843 } 844 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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