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[6.1.y,04/14] ACPI: resource: Honor MADT INT_SRC_OVR settings for IRQ1 on AMD Zen

Message ID 20240408103207.197423-5-kovalev@altlinux.org
State New
Headers show
Series ACPI: resource: Add IRQ override quirks (backport changes from v6.9-rc3) | expand

Commit Message

Vasiliy Kovalev April 8, 2024, 10:31 a.m. UTC 
From: Hans de Goede <hdegoede@redhat.com>

commit c6a1fd910d1bf8a0e3db7aebb229e3c81bc305c4 upstream.

On AMD Zen acpi_dev_irq_override() by default prefers the DSDT IRQ 1
settings over the MADT settings.

This causes the keyboard to malfunction on some laptop models
(see Links), all models from the Links have an INT_SRC_OVR MADT entry
for IRQ 1.

Fixes: a9c4a912b7dc ("ACPI: resource: Remove "Zen" specific match and quirks")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=217336
Link: https://bugzilla.kernel.org/show_bug.cgi?id=217394
Link: https://bugzilla.kernel.org/show_bug.cgi?id=217406
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Vasiliy Kovalev <kovalev@altlinux.org>
---
 arch/x86/include/asm/acpi.h | 2 ++
 arch/x86/kernel/acpi/boot.c | 4 ++++
 drivers/acpi/resource.c     | 4 ++++
 3 files changed, 10 insertions(+)
diff mbox series

Patch

diff --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h
index 8eb74cf386dbe5..2888c0ee4df045 100644
--- a/arch/x86/include/asm/acpi.h
+++ b/arch/x86/include/asm/acpi.h
@@ -15,6 +15,7 @@ 
 #include <asm/mpspec.h>
 #include <asm/x86_init.h>
 #include <asm/cpufeature.h>
+#include <asm/irq_vectors.h>
 
 #ifdef CONFIG_ACPI_APEI
 # include <asm/pgtable_types.h>
@@ -31,6 +32,7 @@  extern int acpi_skip_timer_override;
 extern int acpi_use_timer_override;
 extern int acpi_fix_pin2_polarity;
 extern int acpi_disable_cmcff;
+extern bool acpi_int_src_ovr[NR_IRQS_LEGACY];
 
 extern u8 acpi_sci_flags;
 extern u32 acpi_sci_override_gsi;
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 2252340b2133e2..b045e20872d107 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -52,6 +52,7 @@  int acpi_lapic;
 int acpi_ioapic;
 int acpi_strict;
 int acpi_disable_cmcff;
+bool acpi_int_src_ovr[NR_IRQS_LEGACY];
 
 /* ACPI SCI override configuration */
 u8 acpi_sci_flags __initdata;
@@ -591,6 +592,9 @@  acpi_parse_int_src_ovr(union acpi_subtable_headers * header,
 
 	acpi_table_print_madt_entry(&header->common);
 
+	if (intsrc->source_irq < NR_IRQS_LEGACY)
+		acpi_int_src_ovr[intsrc->source_irq] = true;
+
 	if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) {
 		acpi_sci_ioapic_setup(intsrc->source_irq,
 				      intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c
index 2a3b8bf58b7ac4..8e28e76158894f 100644
--- a/drivers/acpi/resource.c
+++ b/drivers/acpi/resource.c
@@ -617,6 +617,10 @@  static bool acpi_dev_irq_override(u32 gsi, u8 triggering, u8 polarity,
 	if (gsi != 1 && gsi != 12)
 		return true;
 
+	/* If the override comes from an INT_SRC_OVR MADT entry, honor it. */
+	if (acpi_int_src_ovr[gsi])
+		return true;
+
 	/*
 	 * IRQ override isn't needed on modern AMD Zen systems and
 	 * this override breaks active low IRQs on AMD Ryzen 6000 and