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ACPI: fix two IRQ8 issues in IOAPIC mode

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Use mp_irqs[] to get PNP device's interrupt polarity and trigger.
There are two reasons to do this:
1. BIOS bug for PNP interrupt
2. BIOS explictly does override
mp_irqs[] should cover all the cases.

http://bugzilla.kernel.org/show_bug.cgi?id=5243
http://bugzilla.kernel.org/show_bug.cgi?id=7679
http://bugzilla.kernel.org/show_bug.cgi?id=9153

[lenb: fixed !IOAPIC and 64-bit !SMP builds]

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Shaohua Li
2007-11-17 01:05:28 -05:00
committed by Len Brown
parent f0714d2023
commit 61fd47e0c8
4 changed files with 65 additions and 3 deletions
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18
drivers/pnp/pnpacpi/rsparser.c
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@@ -75,6 +75,7 @@ static void pnpacpi_parse_allocated_irqresource(struct pnp_resource_table *res,
{
int i = 0;
int irq;
int p, t;
if (!valid_IRQ(gsi))
return;
@@ -85,6 +86,23 @@ static void pnpacpi_parse_allocated_irqresource(struct pnp_resource_table *res,
if (i >= PNP_MAX_IRQ)
return;
/*
* in IO-APIC mode, use overrided attribute. Two reasons:
* 1. BIOS bug in DSDT
* 2. BIOS uses IO-APIC mode Interrupt Source Override
*/
if (!acpi_get_override_irq(gsi, &t, &p)) {
t = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
p = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
if (triggering != t || polarity != p) {
pnp_warn("IRQ %d override to %s, %s",
gsi, t ? "edge":"level", p ? "low":"high");
triggering = t;
polarity = p;
}
}
res->irq_resource[i].flags = IORESOURCE_IRQ; // Also clears _UNSET flag
res->irq_resource[i].flags |= irq_flags(triggering, polarity);
irq = acpi_register_gsi(gsi, triggering, polarity);