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authorBalaji Rao <balajirrao@gmail.com>2008-01-30 13:30:03 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 13:30:03 +0100
commit37a47db8d7f0f38dac5acf5a13abbc8f401707fa (patch)
treef3827e6b77a81680b2870f82a22bb86c4fefefee /arch/x86/kernel
parente3f37a54f690d3e64995ea7ecea08c5ab3070faf (diff)
x86: assign IRQs to HPET timers, fix
Looks like IRQ 31 is assigned to timer 3, even without the patch! I wonder who wrote the number 31. But the manual says that it is zero by default. I think we should check whether the timer has been allocated an IRQ before proceeding to assign one to it. Here is a patch that does this. Signed-off-by: Balaji Rao <balajirrao@gmail.com> Tested-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel')
-rw-r--r--arch/x86/kernel/hpet.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index 786aa227afd..a3c56c9b8a0 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -117,7 +117,8 @@ int is_hpet_enabled(void)
static void hpet_reserve_platform_timers(unsigned long id)
{
struct hpet __iomem *hpet = hpet_virt_address;
- unsigned int nrtimers;
+ struct hpet_timer __iomem *timer = &hpet->hpet_timers[2];
+ unsigned int nrtimers, i;
struct hpet_data hd;
nrtimers = ((id & HPET_ID_NUMBER) >> HPET_ID_NUMBER_SHIFT) + 1;
@@ -135,10 +136,9 @@ static void hpet_reserve_platform_timers(unsigned long id)
hd.hd_irq[0] = HPET_LEGACY_8254;
hd.hd_irq[1] = HPET_LEGACY_RTC;
- /*
- * IRQs for the other timers are assigned dynamically
- * in hpet_alloc
- */
+ for (i = 2; i < nrtimers; timer++, i++)
+ hd.hd_irq[i] = (timer->hpet_config & Tn_INT_ROUTE_CNF_MASK) >>
+ Tn_INT_ROUTE_CNF_SHIFT;
hpet_alloc(&hd);
}
#else