Hi all, After merging the driver-core tree, today's linux-next build (arm multi_v7_defconfig) failed like this: ERROR: "platform_get_irq_optional" [drivers/hwmon/pwm-fan.ko] undefined! Caused by commit 6e7e5c7fbc1c ("hwmon: pwm-fan: Use platform_get_irq_optional()") [ or maybe commit 8973ea47901c ("driver core: platform: Introduce platform_get_irq_optional()") ] I have added the following patch for today. From: Stephen Rothwell Date: Thu, 29 Aug 2019 17:26:34 +1000 Subject: [PATCH] driver core: platform: export platform_get_irq_optional Fixes: 6e7e5c7fbc1c ("hwmon: pwm-fan: Use platform_get_irq_optional()") Signed-off-by: Stephen Rothwell --- drivers/base/platform.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 0dda6ade50fd..11c6e56ccc22 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -213,6 +213,7 @@ int platform_get_irq_optional(struct platform_device *dev, unsigned int num) { return __platform_get_irq(dev, num); } +EXPORT_SYMBOL_GPL(platform_get_irq_optional); /** * platform_irq_count - Count the number of IRQs a platform device uses -- 2.20.1 -- Cheers, Stephen Rothwell