On 05/08/2014 10:42 PM, Arnd Bergmann wrote:
Today's linux-next kernel started showing build errors for the
use of WARN_ON in linux/gpio/consumer.h:
In file included from drivers/video/backlight/pwm_bl.c:13:0:
include/linux/gpio/consumer.h: In function 'gpiod_put':
include/linux/gpio/consumer.h:81:2: error: implicit declaration of function
'WARN_ON' [-Werror=implicit-function-declaration]
It's not clear why this never happened before, but this patch
fixes it by including the header that contains the defintion
of this macro.
Acked-by: Alexandre Courbot <acour...@nvidia.com>
I guess this went unnoticed because this part of the code is only active
if compiled without gpiolib, which is not a very common configuration.
Sorry about that.
Signed-off-by: Arnd Bergmann <a...@arnd.de>
diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h
index bed128e..073b9b1 100644
--- a/include/linux/gpio/consumer.h
+++ b/include/linux/gpio/consumer.h
@@ -1,6 +1,7 @@
#ifndef __LINUX_GPIO_CONSUMER_H
#define __LINUX_GPIO_CONSUMER_H
+#include <linux/bug.h>
#include <linux/err.h>
#include <linux/kernel.h>
--
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