Commit 719e7110 authored by Eric W. Biederman's avatar Eric W. Biederman Committed by Linus Torvalds
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[PATCH] kexec: x86_64: add i8259 shutdown method 



From: Eric W. Biederman <ebiederm@xmission.com

The following patch simply adds a shutdown method to the x86_64 i8259 code.

Signed-off-by: default avatarEric Biederman <ebiederm@xmission.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent cee5dab4

arch/x86_64/kernel/i8259.c

+12 −0
Original line number Diff line number Diff line
@@ -414,10 +414,22 @@ static int i8259A_suspend(struct sys_device *dev, pm_message_t state) 
	return 0;

}



static int i8259A_shutdown(struct sys_device *dev)

{

	/* Put the i8259A into a quiescent state that

	 * the kernel initialization code can get it

	 * out of.

	 */

	outb(0xff, 0x21);	/* mask all of 8259A-1 */

	outb(0xff, 0xA1);	/* mask all of 8259A-1 */

	return 0;

}



static struct sysdev_class i8259_sysdev_class = {

	set_kset_name("i8259"),

	.suspend = i8259A_suspend,

	.resume = i8259A_resume,

	.shutdown = i8259A_shutdown,

};



static struct sys_device device_i8259A = {