From: Eric W. Biederman <ebiederm@xmission.com
The following patch simply adds a shutdown method to the x86_64 i8259 code.
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
25-akpm/arch/x86_64/kernel/i8259.c | 14 ++++++++++++++
1 files changed, 14 insertions(+)
diff -puN arch/x86_64/kernel/i8259.c~kexec-i8259-shutdown-x86_64 arch/x86_64/kernel/i8259.c
--- 25/arch/x86_64/kernel/i8259.c~kexec-i8259-shutdown-x86_64 2004-08-22 21:40:43.048858832 -0700
+++ 25-akpm/arch/x86_64/kernel/i8259.c 2004-08-22 21:40:43.051858376 -0700
@@ -416,10 +416,24 @@ static int i8259A_suspend(struct sys_dev
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 = {
_