* [PATCH] x86/apic: do not clear nr_irqs_gsi if no legacy irqs
@ 2010-06-28 20:09 Jacob Pan
0 siblings, 0 replies; only message in thread
From: Jacob Pan @ 2010-06-28 20:09 UTC (permalink / raw)
To: LKML, H. Peter Anvin, Ingo Molnar, Thomas Gleixner; +Cc: Jacob Pan
nr_legacy_irqs is set in probe_nr_irqs_gsi, we should not clear it after that.
Otherwise, the result is that MSI irqs will be allocated from the wrong range
for the systems without legacy PIC.
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
---
arch/x86/kernel/apic/io_apic.c | 4 +---
1 files changed, 1 insertions(+), 3 deletions(-)
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index d99388a..5592462 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -155,10 +155,8 @@ int __init arch_early_irq_init(void)
int node;
int i;
- if (!legacy_pic->nr_legacy_irqs) {
- nr_irqs_gsi = 0;
+ if (!legacy_pic->nr_legacy_irqs)
io_apic_irqs = ~0UL;
- }
cfg = irq_cfgx;
count = ARRAY_SIZE(irq_cfgx);
--
1.6.3.3
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