tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/mkl/linux-can-next.git mcp25xxfd-cleanup head: 17febc39531653c6cdc996d99b8fc0748f0aabd7 commit: 17febc39531653c6cdc996d99b8fc0748f0aabd7 [36/36] wip config: sh-allmodconfig (attached as .config) compiler: sh4-linux-gcc (GCC) 7.4.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 17febc39531653c6cdc996d99b8fc0748f0aabd7 # save the attached .config to linux build tree GCC_VERSION=7.4.0 make.cross ARCH=sh If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> 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 >>): In file included from include/linux/node.h:18:0, from include/linux/cpu.h:17, from include/linux/of_device.h:5, from drivers/net/can/spi/mcp25xxfd/mcp25xxfd_base.c:11: drivers/net/can/spi/mcp25xxfd/mcp25xxfd_base.c: In function 'mcp25xxfd_base_probe': >> include/linux/device.h:1140:19: warning: 'priv' may be used uninitialized in this function [-Wmaybe-uninitialized] dev->driver_data = data; ~~~~~~~~~~~~~~~~~^~~~~~ drivers/net/can/spi/mcp25xxfd/mcp25xxfd_base.c:74:25: note: 'priv' was declared here struct mcp25xxfd_priv *priv; ^~~~ -- In file included from include/linux/node.h:18:0, from include/linux/cpu.h:17, from include/linux/of_device.h:5, from drivers/net//can/spi/mcp25xxfd/mcp25xxfd_base.c:11: drivers/net//can/spi/mcp25xxfd/mcp25xxfd_base.c: In function 'mcp25xxfd_base_probe': >> include/linux/device.h:1140:19: warning: 'priv' may be used uninitialized in this function [-Wmaybe-uninitialized] dev->driver_data = data; ~~~~~~~~~~~~~~~~~^~~~~~ drivers/net//can/spi/mcp25xxfd/mcp25xxfd_base.c:74:25: note: 'priv' was declared here struct mcp25xxfd_priv *priv; ^~~~ vim +/priv +1140 include/linux/device.h a996d010b64878 Jean Delvare 2014-04-14 1137 a996d010b64878 Jean Delvare 2014-04-14 1138 static inline void dev_set_drvdata(struct device *dev, void *data) a996d010b64878 Jean Delvare 2014-04-14 1139 { a996d010b64878 Jean Delvare 2014-04-14 @1140 dev->driver_data = data; a996d010b64878 Jean Delvare 2014-04-14 1141 } a996d010b64878 Jean Delvare 2014-04-14 1142 :::::: The code at line 1140 was first introduced by commit :::::: a996d010b648788b615938f6a26be6cf08d96aaf driver core: Inline dev_set/get_drvdata :::::: TO: Jean Delvare <jdelvare@xxxxxxx> :::::: CC: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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