diff options
Diffstat (limited to 'arch/i386/kernel/i8259.c')
| -rw-r--r-- | arch/i386/kernel/i8259.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/i386/kernel/i8259.c b/arch/i386/kernel/i8259.c index 2c4813b47e57..178f4e9bac9d 100644 --- a/arch/i386/kernel/i8259.c +++ b/arch/i386/kernel/i8259.c @@ -268,10 +268,22 @@ 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 = { |