linux-kernel - [PATCH] ACPI: scan: Ignore MAGN0001

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Date:   Fri, 21 Apr 2023 18:27:02 +0200
From:   Marius Hoch <mail@...iushoch.de>
To:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>, linux-acpi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Hans de Goede <hdegoede@...hat.com>,
        Marius Hoch <mail@...iushoch.de>
Subject: [PATCH] ACPI: scan: Ignore MAGN0001

The LSM303D on the Lenovo Yoga Tablet 2 series is present
as both ACCL0001 and MAGN0001. As we can only ever register an
i2c client for one of them, ignore MAGN0001.

Currently this errors:
i2c i2c-4: Failed to register i2c client MAGN0001:00 at 0x1d (-16)

Tested on a Lenovo Yoga Tablet 2 1051-F.

Signed-off-by: Marius Hoch <mail@...iushoch.de>
---
 drivers/acpi/scan.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 0c6f06abe3f4..d21c411e9719 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -1730,6 +1730,12 @@ static bool acpi_device_enumeration_by_parent(struct acpi_device *device)
 	 */
 		{"BCM4752", },
 		{"LNV4752", },
+	/*
+	 * The LSM303D on the Lenovo Yoga Tablet 2 series is present
+	 * as both ACCL0001 and MAGN0001. As we can only ever register an
+	 * i2c client for one of them, ignore MAGN0001.
+	 */
+		{"MAGN0001", },
 		{}
 	};
 

base-commit: cb0856346a60fe3eb837ba5e73588a41f81ac05f
-- 
2.40.0