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include/linux/eventfd.h: include linux/errno.h

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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@arndb.de
Fixes: 9a69f5087c ("drivers/staging: Gasket driver framework + Apex driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Eric Biggers <ebiggers@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Arnd Bergmann 2018-07-26 16:37:38 -07:00 committed by Linus Torvalds
parent bfd40eaff5
commit fa3fc2ad99
1 changed files with 1 additions and 0 deletions
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include/linux/eventfd.h
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@ -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