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| author | Eric W. Biederman <ebiederm@xmission.com> | 2005-06-25 14:57:43 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-25 16:24:46 -0700 |
| commit | 719e711050482be667dafd39ec787859d353931c (patch) | |
| tree | 54580a25fc0a0f6167f7d15be9a7297808b28a04 /arch | |
| parent | cee5dab4856f51c5cad3aecc630ad0a4d2217a85 (diff) | |
| download | op-kernel-dev-719e711050482be667dafd39ec787859d353931c.zip op-kernel-dev-719e711050482be667dafd39ec787859d353931c.tar.gz | |
[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: Eric Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86_64/kernel/i8259.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/x86_64/kernel/i8259.c b/arch/x86_64/kernel/i8259.c index 19eafa0..a891690 100644 --- a/arch/x86_64/kernel/i8259.c +++ b/arch/x86_64/kernel/i8259.c @@ -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 = { |
