Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=33c053...
Commit: 33c053d0aec344c8b2ad6966d904ebeff64e590b
Parent: 2c460d0b6813a5d2a7d571b0b561e4e727036dd7
Author: Glauber Costa <gcosta@redhat.com>
AuthorDate: Mon Jul 21 18:42:52 2008 -0300
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Mon Oct 13 10:21:47 2008 +0200
x86: wrap MCA_bus test around an ifdef
Only test for MCA_bus if support for MCA is compiled in.
Also, for x86_64, write the code inside the conditional
for consistency with i386. It won't bite us, since it'll
probably never select CONFIG_MCA anyway.
Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
arch/x86/kernel/time_32.c | 2 ++
arch/x86/kernel/time_64.c | 8 ++++++++
2 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/time_32.c b/arch/x86/kernel/time_32.c
index 7215bc6..77b400f 100644
--- a/arch/x86/kernel/time_32.c
+++ b/arch/x86/kernel/time_32.c
@@ -94,6 +94,7 @@ irqreturn_t timer_interrupt(int irq, void *dev_id)
do_timer_interrupt_hook();
+#ifdef CONFIG_MCA
if (MCA_bus) {
/* The PS/2 uses level-triggered interrupts. You can't
turn them off, nor would you want to (any attempt to
@@ -107,6 +108,7 @@ irqreturn_t timer_interrupt(int irq, void *dev_id)
u8 irq_v = inb_p( 0x61 ); /* read the current state */
outb_p( irq_v|0x80, 0x61 ); /* reset the IRQ */
}
+#endif
return IRQ_HANDLED;
}
diff --git a/arch/x86/kernel/time_64.c b/arch/x86/kernel/time_64.c
index 2be67c2..207a7a1 100644
--- a/arch/x86/kernel/time_64.c
+++ b/arch/x86/kernel/time_64.c
@@ -16,6 +16,7 @@
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/time.h>
+#include <linux/mca.h>
#include <asm/i8253.h>
#include <asm/hpet.h>
@@ -54,6 +55,13 @@ irqreturn_t timer_interrupt(int irq, void *dev_id)
global_clock_event->event_handler(global_clock_event);
+#ifdef CONFIG_MCA
+ if (MCA_bus) {
+ u8 irq_v = inb_p(0x61); /* read the current state */
+ outb_p(irq_v|0x80, 0x61); /* reset the IRQ */
+ }
+#endif
+
return IRQ_HANDLED;
}
--
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