[SeaBIOS] [PATCH] acpi: LNKS is not needed
Laszlo Ersek
lersek at redhat.com
Tue Aug 7 15:11:38 CEST 2012
On 08/07/12 15:01, Paolo Bonzini wrote:
> 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
> @@ -86,7 +86,10 @@ 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),
> prt_slot3(0x0003),
> prt_slot0(0x0004),
> @@ -653,17 +656,6 @@ DefinitionBlock (
> Method (_CRS, 0, NotSerialized) { Return (IQCR(PRQ3)) }
> Method (_SRS, 1, NotSerialized) { SETIRQ(PRQ3, Arg0) }
> }
> - Device(LNKS) {
> - Name(_HID, EISAID("PNP0C0F")) // PCI interrupt link
> - Name(_UID, 5)
> - Name(_PRS, ResourceTemplate() {
> - Interrupt (, Level, ActiveHigh, Shared)
> - { 9 }
> - })
> - Method (_STA, 0, NotSerialized) { Return (IQST(PRQ0)) }
> - Method (_DIS, 0, NotSerialized) { DISIRQ(PRQ0) }
> - Method (_CRS, 0, NotSerialized) { Return (IQCR(PRQ0)) }
> - }
> }
>
> /****************************************************************
Reviewed-by: Laszlo Ersek <lersek at redhat.com>
Thanks!
Laszlo
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