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: Mario Limonciello <mario.limonciello@xxxxxxx>
Cc: Linux regressions mailing list <regressions@xxxxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
Changes in v3:
- Make acpi_int_src_ovr an array which keep track of the status
of all legacy IRQs and not just IRQ 1
---
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 --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h
index 8eb74cf386db..6bc00fddf8dd 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 int 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 21b542a6866c..b88e5e0135ab 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;
+int acpi_int_src_ovr[NR_IRQS_LEGACY];
/* ACPI SCI override configuration */
u8 acpi_sci_flags __initdata;
@@ -588,6 +589,9 @@ 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] = 1;
+
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 380cda1e86f4..a0bb53868e18 100644
--- a/drivers/acpi/resource.c
+++ b/drivers/acpi/resource.c
@@ -551,6 +551,10 @@ 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
--
2.41.0
