Following build regression found while building mips ar7_defconfig on Linux next-20230307 tag.

Reported-by: Linux Kernel Functional Testing lkft@linaro.org

Please find the build log and details below.

build log: -------- arch/mips/ar7/gpio.c:19:33: error: field 'chip' has incomplete type 19 | struct gpio_chip chip; | ^~~~ arch/mips/ar7/gpio.c: In function 'ar7_gpio_get_value': arch/mips/ar7/gpio.c:24:38: error: implicit declaration of function 'gpiochip_get_data' [-Werror=implicit-function-declaration] 24 | struct ar7_gpio_chip *gpch = gpiochip_get_data(chip); | ^~~~~~~~~~~~~~~~~ arch/mips/ar7/gpio.c:24:38: error: initialization of 'struct ar7_gpio_chip *' from 'int' makes pointer from integer without a cast [-Werror=int-conversion] arch/mips/ar7/gpio.c: In function 'titan_gpio_get_value': arch/mips/ar7/gpio.c:32:38: error: initialization of 'struct ar7_gpio_chip *' from 'int' makes pointer from integer without a cast [-Werror=int-conversion] 32 | struct ar7_gpio_chip *gpch = gpiochip_get_data(chip); | ^~~~~~~~~~~~~~~~~ arch/mips/ar7/gpio.c: In function 'ar7_gpio_set_value': arch/mips/ar7/gpio.c:42:38: error: initialization of 'struct ar7_gpio_chip *' from 'int' makes pointer from integer without a cast [-Werror=int-conversion] 42 | struct ar7_gpio_chip *gpch = gpiochip_get_data(chip); | ^~~~~~~~~~~~~~~~~ arch/mips/ar7/gpio.c: In function 'titan_gpio_set_value': arch/mips/ar7/gpio.c:55:38: error: initialization of 'struct ar7_gpio_chip *' from 'int' makes pointer from integer without a cast [-Werror=int-conversion] 55 | struct ar7_gpio_chip *gpch = gpiochip_get_data(chip); | ^~~~~~~~~~~~~~~~~ arch/mips/ar7/gpio.c: In function 'ar7_gpio_direction_input': arch/mips/ar7/gpio.c:68:38: error: initialization of 'struct ar7_gpio_chip *' from 'int' makes pointer from integer without a cast [-Werror=int-conversion] 68 | struct ar7_gpio_chip *gpch = gpiochip_get_data(chip); | ^~~~~~~~~~~~~~~~~ arch/mips/ar7/gpio.c: In function 'titan_gpio_direction_input': arch/mips/ar7/gpio.c:78:38: error: initialization of 'struct ar7_gpio_chip *' from 'int' makes pointer from integer without a cast [-Werror=int-conversion] 78 | struct ar7_gpio_chip *gpch = gpiochip_get_data(chip); | ^~~~~~~~~~~~~~~~~ arch/mips/ar7/gpio.c: In function 'ar7_gpio_direction_output': arch/mips/ar7/gpio.c:93:38: error: initialization of 'struct ar7_gpio_chip *' from 'int' makes pointer from integer without a cast [-Werror=int-conversion] 93 | struct ar7_gpio_chip *gpch = gpiochip_get_data(chip); | ^~~~~~~~~~~~~~~~~ arch/mips/ar7/gpio.c: In function 'titan_gpio_direction_output': arch/mips/ar7/gpio.c:105:38: error: initialization of 'struct ar7_gpio_chip *' from 'int' makes pointer from integer without a cast [-Werror=int-conversion] 105 | struct ar7_gpio_chip *gpch = gpiochip_get_data(chip); | ^~~~~~~~~~~~~~~~~ arch/mips/ar7/gpio.c: In function 'ar7_gpio_init': arch/mips/ar7/gpio.c:318:15: error: implicit declaration of function 'gpiochip_add_data' [-Werror=implicit-function-declaration] 318 | ret = gpiochip_add_data(&gpch->chip, gpch); | ^~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors

Build details, https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230307/tes... https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230307/tes...

metadata: build_name: gcc-12-ar7_defconfig config: https://storage.tuxsuite.com/public/linaro/lkft/builds/2MfXLAJXuaMcoIJz6Tg4y... download_url: https://storage.tuxsuite.com/public/linaro/lkft/builds/2MfXLAJXuaMcoIJz6Tg4y... git_describe: next-20230307 git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next git_sha: 709c6adf19dc558e44ab5c01659b09a16a2d3c82 git_short_log: 709c6adf19dc ("Add linux-next specific files for 20230307")

Steps to reproduce: --------------- # To install tuxmake on your system globally: # sudo pip3 install -U tuxmake # # See https://docs.tuxmake.org/ for complete documentation. # Original tuxmake command with fragments listed below.

tuxmake --runtime podman --target-arch mips --toolchain gcc-12 --kconfig ar7_defconfig

-- Linaro LKFT https://lkft.linaro.org