Hi Janusz, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on gpio/for-next] [also build test WARNING on v4.19-rc2 next-20180831] [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/Janusz-Krzysztofik/gpiolib-speed-up-GPIO-array-processing/20180903-174241 base: https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git for-next reproduce: # apt-get install sparse make ARCH=x86_64 allmodconfig make C=1 CF=-D__CHECK_ENDIAN__ :::::: branch date: 9 hours ago :::::: commit date: 9 hours ago >> drivers/mux/gpio.c:25:9: sparse: Variable length array is used. -- >> drivers/i2c/muxes/i2c-mux-gpio.c:29:9: sparse: Variable length array is used. include/linux/device.h:685:13: sparse: undefined identifier '__builtin_mul_overflow' include/linux/device.h:685:13: sparse: not a function <noident> include/linux/device.h:685:13: sparse: call with no type! # https://github.com/0day-ci/linux/commit/00db98568b73a7b04c5120e5b87934c7355cc015 git remote add linux-review https://github.com/0day-ci/linux git remote update linux-review git checkout 00db98568b73a7b04c5120e5b87934c7355cc015 vim +25 drivers/mux/gpio.c 2c089f08e drivers/mux/mux-gpio.c Peter Rosin 2017-05-14 21 2c089f08e drivers/mux/mux-gpio.c Peter Rosin 2017-05-14 22 static int mux_gpio_set(struct mux_control *mux, int state) 2c089f08e drivers/mux/mux-gpio.c Peter Rosin 2017-05-14 23 { 2c089f08e drivers/mux/mux-gpio.c Peter Rosin 2017-05-14 24 struct mux_gpio *mux_gpio = mux_chip_priv(mux->chip); 00db98568 drivers/mux/gpio.c Janusz Krzysztofik 2018-09-01 @25 DECLARE_BITMAP(value_bitmap, mux_gpio->gpios->ndescs); 2c089f08e drivers/mux/mux-gpio.c Peter Rosin 2017-05-14 26 00db98568 drivers/mux/gpio.c Janusz Krzysztofik 2018-09-01 27 *value_bitmap = state; 2c089f08e drivers/mux/mux-gpio.c Peter Rosin 2017-05-14 28 2c089f08e drivers/mux/mux-gpio.c Peter Rosin 2017-05-14 29 gpiod_set_array_value_cansleep(mux_gpio->gpios->ndescs, 00db98568 drivers/mux/gpio.c Janusz Krzysztofik 2018-09-01 30 mux_gpio->gpios->desc, value_bitmap); 2c089f08e drivers/mux/mux-gpio.c Peter Rosin 2017-05-14 31 2c089f08e drivers/mux/mux-gpio.c Peter Rosin 2017-05-14 32 return 0; 2c089f08e drivers/mux/mux-gpio.c Peter Rosin 2017-05-14 33 } 2c089f08e drivers/mux/mux-gpio.c Peter Rosin 2017-05-14 34 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
