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Date: Fri, 21 Aug 2015 15:26:32 +0800 From: Jiang Liu <jiang.liu@...ux.intel.com> To: Thomas Gleixner <tglx@...utronix.de>, "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>, Nick Meier <nmeier@...rosoft.com>, "Rafael J. Wysocki" <rjw@...ysocki.net>, Len Brown <len.brown@...el.com>, Pavel Machek <pavel@....cz>, Ingo Molnar <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org Cc: Jiang Liu <jiang.liu@...ux.intel.com>, linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org Subject: [Patch v2] Hi Nick, Rafael and Thomas have concerns about the way to solve the regression by quirk, so could you please help to test this patch? Thanks! Gerry Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com> --- arch/x86/kernel/acpi/boot.c | 1 + drivers/acpi/pci_link.c | 16 ++++++++++++++++ include/linux/acpi.h | 2 +- 3 files changed, 18 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index e49ee24da85e..9393896717d0 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -445,6 +445,7 @@ static void __init acpi_sci_ioapic_setup(u8 bus_irq, u16 polarity, u16 trigger, polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK; mp_override_legacy_irq(bus_irq, polarity, trigger, gsi); + acpi_penalize_sci_irq(bus_irq, trigger, polarity); /* * stash over-ride to indicate we've been here diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c index cfd7581cc19f..b09ad554430a 100644 --- a/drivers/acpi/pci_link.c +++ b/drivers/acpi/pci_link.c @@ -826,6 +826,22 @@ void acpi_penalize_isa_irq(int irq, int active) } /* + * Penalize IRQ used by ACPI SCI. If ACPI SCI pin attributes conflict with + * PCI IRQ attributes, mark ACPI SCI as ISA_ALWAYS so it won't be use for + * PCI IRQs. + */ +void acpi_penalize_sci_irq(int irq, int trigger, int polarity) +{ + if (irq >= 0 && irq < ARRAY_SIZE(acpi_irq_penalty)) { + if (trigger != ACPI_MADT_TRIGGER_LEVEL || + polarity != ACPI_MADT_POLARITY_ACTIVE_LOW) + acpi_irq_penalty[irq] += PIRQ_PENALTY_ISA_ALWAYS; + else + acpi_irq_penalty[irq] += PIRQ_PENALTY_PCI_USING; + } +} + +/* * Over-ride default table to reserve additional IRQs for use by ISA * e.g. acpi_irq_isa=5 * Useful for telling ACPI how not to interfere with your ISA sound card. diff --git a/include/linux/acpi.h b/include/linux/acpi.h index d2445fa9999f..0b2394f61af4 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -221,7 +221,7 @@ struct pci_dev; int acpi_pci_irq_enable (struct pci_dev *dev); void acpi_penalize_isa_irq(int irq, int active); - +void acpi_penalize_sci_irq(int irq, int trigger, int polarity); void acpi_pci_irq_disable (struct pci_dev *dev); extern int ec_read(u8 addr, u8 *val); -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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