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authorShaohua Li <shaohua.li@intel.com>2007-11-17 09:05:28 +0300
committerLen Brown <len.brown@intel.com>2007-11-20 09:16:29 +0300
commit61fd47e0c84764f49b4e52bfd8170fac52636f00 (patch)
treec94c7b8c43dee4bb123900f49ef781607ee0d6fb /drivers/pnp
parentf0714d20234062bd0a8f49a6b32f7d1d7f3c2943 (diff)
downloadlinux-61fd47e0c84764f49b4e52bfd8170fac52636f00.tar.xz
ACPI: fix two IRQ8 issues in IOAPIC mode
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>
Diffstat (limited to 'drivers/pnp')
-rw-r--r--drivers/pnp/pnpacpi/rsparser.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/pnp/pnpacpi/rsparser.c b/drivers/pnp/pnpacpi/rsparser.c
index 0e3b8d0ff06b..11adab13f2b7 100644
--- a/drivers/pnp/pnpacpi/rsparser.c
+++ b/drivers/pnp/pnpacpi/rsparser.c
@@ -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);