Hi Luis, I love your patch! Perhaps something to improve: [auto build test WARNING on linuxtv-media/master] [also build test WARNING on v4.19-rc3 next-20180913] [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/Luis-Oliveira/media-platform-Add-DesignWare-MIPI-CSI2-Host-placeholder/20180915-163514 base: git://linuxtv.org/media_tree.git master config: sh-allmodconfig (attached as .config) compiler: sh4-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0 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=7.2.0 make.cross ARCH=sh 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/dwc/dw-dphy-rx.c: In function 'dw_dphy_read': >> drivers/media/platform/dwc/dw-dphy-rx.c:147:5: warning: 'dphy2' may be used uninitialized in this function [-Wmaybe-uninitialized] if (dphy1 != dphy2) ^ vim +/dphy2 +147 drivers/media/platform/dwc/dw-dphy-rx.c 132 133 u32 dw_dphy_read(struct dw_dphy_rx *dphy, u64 address) 134 { 135 u32 dphy1, dphy2; 136 137 dphy1 = ioread32(dphy->base_address + address); 138 139 if (dphy->lanes_config == CTRL_4_LANES) 140 goto end; 141 142 if (address == R_CSI2_DPHY_TST_CTRL0) 143 dphy2 = ioread32(dphy->base_address + R_CSI2_DPHY2_TST_CTRL0); 144 else if (address == R_CSI2_DPHY_TST_CTRL1) 145 dphy2 = ioread32(dphy->base_address + R_CSI2_DPHY2_TST_CTRL1); 146 > 147 if (dphy1 != dphy2) 148 pr_err("Values read different for each dphy\n"); 149 150 end: 151 return dphy1; 152 } 153 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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