linux-kernel - [PATCH v2 1/2] ACPI: skip IRQ1 override on Lenovo ThinkBook 14G4+ ARA

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Date:   Sun, 19 Jun 2022 21:16:56 +0800
From:   Chuanhong Guo <gch981213@...il.com>
To:     linux-acpi@...r.kernel.org
Cc:     Chuanhong Guo <gch981213@...il.com>, stable@...r.kernel.org,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v2 1/2] ACPI: skip IRQ1 override on Lenovo ThinkBook 14G4+ ARA

The IRQ is described as (Edge, ActiveLow, Shared, ) in ACPI DSDT and
it's correct. The override makes the keyboard interrupt polarity
inverted, resulting in non-functional keyboard.
Add an entry for skipping the override.

Cc: <stable@...r.kernel.org>
Signed-off-by: Chuanhong Guo <gch981213@...il.com>
---
Change since v1:
 Match DMI DMI_PRODUCT_NAME for ThinkBook because the board name
 is used for other completely different Lenovo laptops.

 drivers/acpi/resource.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c
index c2d494784425..b69c229b23dd 100644
--- a/drivers/acpi/resource.c
+++ b/drivers/acpi/resource.c
@@ -399,6 +399,17 @@ static const struct dmi_system_id medion_laptop[] = {
 	{ }
 };
 
+static const struct dmi_system_id irq1_edge_low_shared[] = {
+	{
+		.ident = "Lenovo ThinkBook 14 G4+ ARA",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "21D0"),
+		},
+	},
+	{ }
+};
+
 struct irq_override_cmp {
 	const struct dmi_system_id *system;
 	unsigned char irq;
@@ -409,6 +420,7 @@ struct irq_override_cmp {
 
 static const struct irq_override_cmp skip_override_table[] = {
 	{ medion_laptop, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0 },
+	{ irq1_edge_low_shared, 1, ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_LOW, 1 },
 };
 
 static bool acpi_dev_irq_override(u32 gsi, u8 triggering, u8 polarity,
-- 
2.36.1