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x86: i8259: Add missing include file

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i8259.h uses inb/outb and thus needs to include asm/io.h to avoid the
following build error, as seen with x86_64:defconfig and CONFIG_SMP=n.

  In file included from drivers/rtc/rtc-cmos.c:45:0:
  arch/x86/include/asm/i8259.h: In function 'inb_pic':
  arch/x86/include/asm/i8259.h:32:24: error:
	implicit declaration of function 'inb'

  arch/x86/include/asm/i8259.h: In function 'outb_pic':
  arch/x86/include/asm/i8259.h:45:2: error:
	implicit declaration of function 'outb'

Reported-by: Sebastian Gottschall <s.gottschall@dd-wrt.com>
Suggested-by: Sebastian Gottschall <s.gottschall@dd-wrt.com>
Fixes: 447ae31667 ("x86: Don't include linux/irq.h from asm/hardirq.h")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Guenter Roeck 2018-08-15 13:22:27 -07:00 committed by Linus Torvalds
parent fa1b5d09d0
commit 0a957467c5
1 changed files with 1 additions and 0 deletions
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arch/x86/include/asm/i8259.h
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@ -3,6 +3,7 @@
#define _ASM_X86_I8259_H
#include <linux/delay.h>
#include <asm/io.h>
extern unsigned int cached_irq_mask;