From: Arnd Bergmann <arnd@xxxxxxxx>
Subject: include/linux/eventfd.h: include linux/errno.h
The new gasket staging driver ran into a randconfig build failure when
CONFIG_EVENTFD is disabled:
In file included from drivers/staging/gasket/gasket_interrupt.h:11,
from drivers/staging/gasket/gasket_interrupt.c:4:
include/linux/eventfd.h: In function 'eventfd_ctx_fdget':
include/linux/eventfd.h:51:9: error: implicit declaration of function 'ERR_PTR' [-Werror=implicit-function-declaration]
I can't see anything wrong with including eventfd.h before err.h, so the
easiest fix is to make it possible to do this by including the file where
it is needed.
Link: http://lkml.kernel.org/r/20180724110737.3985088-1-arnd@xxxxxxxx
Fixes: 9a69f5087ccc ("drivers/staging: Gasket driver framework + Apex driver")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Eric Biggers <ebiggers@xxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/eventfd.h | 1 +
1 file changed, 1 insertion(+)
--- a/include/linux/eventfd.h~eventfs-include-linux-errnoh-in-header
+++ a/include/linux/eventfd.h
@@ -11,6 +11,7 @@
#include <linux/fcntl.h>
#include <linux/wait.h>
+#include <linux/err.h>
/*
* CAREFUL: Check include/uapi/asm-generic/fcntl.h when defining
_
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