From 7e76e4bc00999846c17604dc25486fffa542078d Mon Sep 17 00:00:00 2001 From: Tzung-Bi Shih Date: Mon, 18 Jul 2022 10:50:47 +0000 Subject: [PATCH] platform/chrome: cros_kbd_led_backlight: fix build warning drivers/platform/chrome/cros_kbd_led_backlight.c got a new build warning when using the randconfig in [1]: >>> warning: unused variable 'keyboard_led_drvdata_ec_pwm' The warning happens when CONFIG_CROS_EC is set but CONFIG_OF is not set. Reproduce: - mkdir build_dir - wget [1] -O build_dir/.config - COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 \ O=build_dir ARCH=s390 SHELL=/bin/bash drivers/platform/chrome/ Fix the warning by using __maybe_unused. Also use IS_ENABLED() because CROS_EC is a tristate. [1]: https://download.01.org/0day-ci/archive/20220717/202207170538.MR39dw8m-lkp@intel.com/config Fixes: 40f58143745e ("platform/chrome: cros_kbd_led_backlight: support EC PWM backend") Reported-by: kernel test robot Signed-off-by: Tzung-Bi Shih Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20220718105047.2356542-1-tzungbi@kernel.org --- drivers/platform/chrome/cros_kbd_led_backlight.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/platform/chrome/cros_kbd_led_backlight.c b/drivers/platform/chrome/cros_kbd_led_backlight.c index 5ad41c10412d..793fd3f1015d 100644 --- a/drivers/platform/chrome/cros_kbd_led_backlight.c +++ b/drivers/platform/chrome/cros_kbd_led_backlight.c @@ -119,7 +119,7 @@ static const struct keyboard_led_drvdata keyboard_led_drvdata_acpi = { #endif /* CONFIG_ACPI */ -#ifdef CONFIG_CROS_EC +#if IS_ENABLED(CONFIG_CROS_EC) static int keyboard_led_set_brightness_ec_pwm(struct led_classdev *cdev, @@ -180,18 +180,18 @@ static int keyboard_led_init_ec_pwm(struct platform_device *pdev) return 0; } -static const struct keyboard_led_drvdata keyboard_led_drvdata_ec_pwm = { +static const __maybe_unused struct keyboard_led_drvdata keyboard_led_drvdata_ec_pwm = { .init = keyboard_led_init_ec_pwm, .brightness_set_blocking = keyboard_led_set_brightness_ec_pwm, .brightness_get = keyboard_led_get_brightness_ec_pwm, .max_brightness = KEYBOARD_BACKLIGHT_MAX, }; -#else /* CONFIG_CROS_EC */ +#else /* IS_ENABLED(CONFIG_CROS_EC) */ -static const struct keyboard_led_drvdata keyboard_led_drvdata_ec_pwm = {}; +static const __maybe_unused struct keyboard_led_drvdata keyboard_led_drvdata_ec_pwm = {}; -#endif /* CONFIG_CROS_EC */ +#endif /* IS_ENABLED(CONFIG_CROS_EC) */ static int keyboard_led_probe(struct platform_device *pdev) {