7 Aug 2012 15:01
[PATCH] acpi: LNKS is not needed
Paolo Bonzini <pbonzini <at> redhat.com>
2012-08-07 13:01:29 GMT
2012-08-07 13:01:29 GMT
LNKS is a bit strange in that it reuses the same PIIX register as LNKA,
but has a different interrupt. This means that the _CRS it returns will
not be one of the possible resources from _PRS. This shows up in the
Linux boot logs as
ACPI: PCI Interrupt Link [LNKS] (IRQs 9) *0
Instead of that, we can simply use a hardwired interrupt index.
Cc: Gleb Natapov <gnatapov <at> redhat.com>
Cc: Laszlo Ersek <lersek <at> redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini <at> redhat.com>
---
src/acpi-dsdt.dsl | 16 ++++------------
1 file modificato, 4 inserzioni(+), 12 rimozioni(-)
diff --git a/src/acpi-dsdt.dsl b/src/acpi-dsdt.dsl
index 083e2be..66ca853 100644
--- a/src/acpi-dsdt.dsl
+++ b/src/acpi-dsdt.dsl
<at> <at> -86,7 +86,10 <at> <at> DefinitionBlock (
#define prt_slot3(nr) prt_slot(nr, LNKC, LNKD, LNKA, LNKB)
prt_slot0(0x0000),
/* Device 1 is power mgmt device, and can only use irq 9 */
- prt_slot(0x0001, LNKS, LNKB, LNKC, LNKD),
+ Package() { 0x1ffff, 0, 0, 9 },
+ Package() { 0x1ffff, 1, LNKB, 0 },
+ Package() { 0x1ffff, 2, LNKC, 0 },
+ Package() { 0x1ffff, 3, LNKD, 0 }
prt_slot2(0x0002),
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