Hi Amelie, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on ljones-mfd/for-mfd-next] [also build test WARNING on v4.19-rc4 next-20180920] [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/Amelie-Delaunay/dt-bindings-mfd-Add-ST-Multi-Function-eXpander-STMFX-core-bindings/20180920-185854 base: https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git for-mfd-next config: i386-allmodconfig (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=i386 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/mfd/stmfx.c: In function 'stmfx_function_enable': >> drivers/mfd/stmfx.c:103:8: warning: 'mask' may be used uninitialized in this function [-Wmaybe-uninitialized] mask |= STMFX_REG_SYS_CTRL_GPIO_EN; drivers/mfd/stmfx.c:100:5: note: 'mask' was declared here u8 mask; ^~~~ drivers/mfd/stmfx.c: In function 'stmfx_function_disable': >> drivers/mfd/stmfx.c:103:8: warning: 'mask' may be used uninitialized in this function [-Wmaybe-uninitialized] mask |= STMFX_REG_SYS_CTRL_GPIO_EN; drivers/mfd/stmfx.c:100:5: note: 'mask' was declared here u8 mask; ^~~~ vim +/mask +103 drivers/mfd/stmfx.c 97 98 static u8 stmfx_func_to_mask(u32 func) 99 { 100 u8 mask; 101 102 if (func & STMFX_FUNC_GPIO) > 103 mask |= STMFX_REG_SYS_CTRL_GPIO_EN; 104 105 if ((func & STMFX_FUNC_ALTGPIO_LOW) || (func & STMFX_FUNC_ALTGPIO_HIGH)) 106 mask |= STMFX_REG_SYS_CTRL_ALTGPIO_EN; 107 108 if (func & STMFX_FUNC_TS) 109 mask |= STMFX_REG_SYS_CTRL_TS_EN; 110 111 if (func & STMFX_FUNC_IDD) 112 mask |= STMFX_REG_SYS_CTRL_IDD_EN; 113 114 return mask; 115 } 116 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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