tree: https://github.com/intel/linux-intel-lts.git 5.4/yocto head: 2e228f3df9479e9e061cc7e0b7aba0c071ea22bf commit: 2e228f3df9479e9e061cc7e0b7aba0c071ea22bf [1/1] REVERT-ME: Temporary Enable D0i3 flow for PSE IOs config: microblaze-randconfig-s031-20210611 (attached as .config) compiler: microblaze-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-341-g8af24329-dirty # https://github.com/intel/linux-intel-lts/commit/2e228f3df9479e9e061cc7e0b... git remote add intel-linux-intel-lts https://github.com/intel/linux-intel-lts.git git fetch --no-tags intel-linux-intel-lts 5.4/yocto git checkout 2e228f3df9479e9e061cc7e0b7aba0c071ea22bf # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=microblaze If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) vim +/CONFIG_PM +155 drivers/spi/spi-dw-pci.c 154 156 static int dw_spi_runtime_suspend(struct device *dev) 157 { 158 struct dw_spi *dws = dev_get_drvdata(dev); 159 unsigned long j0, j1, delay; 160 u32 d0i3c_reg; 161 u32 cgsr_reg; 162 163 delay = msecs_to_jiffies(100); 164 j0 = jiffies; 165 j1 = j0 + delay; 166 167 168 cgsr_reg = dw_readl(dws, PSE_SPI_CGSR); 169 dw_writel(dws, PSE_SPI_CGSR, PSE_SPI_D0I3_RR); 170 171 d0i3c_reg = dw_readl(dws, PSE_SPI_D0I3C); 172 173 if (d0i3c_reg & PSE_SPI_D0I3_CIP) { 174 dev_info(dev, "%s d0i3c CIP detected", __func__); 175 } else { 176 dw_writel(dws, PSE_SPI_D0I3C, PSE_SPI_D0I3_EN); 177 d0i3c_reg = dw_readl(dws, PSE_SPI_D0I3C); 178 } 179 180 while (time_before(jiffies, j1)) { 181 d0i3c_reg = dw_readl(dws, PSE_SPI_D0I3C); 182 if (!(d0i3c_reg & PSE_SPI_D0I3_CIP)) 183 break; 184 } 185 186 if (d0i3c_reg & PSE_SPI_D0I3_CIP) 187 dev_info(dev, "%s: timeout waiting CIP to be cleared", 188 __func__); 189 190 return 0; 191 } 192 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org