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platform/x86: dell-rbtn: Add missing #include

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Building with W=1 complains:
  CC [M]  drivers/platform/x86/dell-rbtn.o
drivers/platform/x86/dell-rbtn.c:345:5: warning: no previous prototype for 'dell_rbtn_notifier_register' [-Wmissing-prototypes]
  345 | int dell_rbtn_notifier_register(struct notifier_block *nb)
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/platform/x86/dell-rbtn.c:371:5: warning: no previous prototype for 'dell_rbtn_notifier_unregister' [-Wmissing-prototypes]
  371 | int dell_rbtn_notifier_unregister(struct notifier_block *nb)
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The real problem is a missing include. Add it to keep dell-rbtn.c and .h in sync.

Fixes: b05ffc95f9ed ("dell-rbtn: Export notifier for other kernel modules")
Signed-off-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
[andy: massaged commit message, added Fixes tag]
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This commit is contained in:
Valdis Kl ē tnieks 2019-03-12 07:26:06 -04:00 committed by Andy Shevchenko
parent 9e98c678c2
commit e28f296ea1
1 changed files with 2 additions and 0 deletions
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2
drivers/platform/x86/dell-rbtn.c
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@ -18,6 +18,8 @@
#include <linux/rfkill.h>
#include <linux/input.h>
#include "dell-rbtn.h"
enum rbtn_type {
RBTN_UNKNOWN,
RBTN_TOGGLE,