linux-kernel - [PATCH v2] platform/x86: wmi: Stop using ACPI device class

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Date: Tue, 30 Jan 2024 23:19:42 +0100
From: Armin Wolf <W_Armin@....de>
To: hdegoede@...hat.com,
	ilpo.jarvinen@...ux.intel.com
Cc: rafael@...nel.org,
	platform-driver-x86@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2] platform/x86: wmi: Stop using ACPI device class

When an ACPI netlink event is received by acpid, the ACPI device
class is passed as its first argument. But since the class string
is not initialized during probe, an empty string is being passed:

	netlink:  PNP0C14:01 000000d0 00000000

Fix this by passing a static string instead.

Tested on a Dell Inspiron 3505.

Signed-off-by: Armin Wolf <W_Armin@....de>
---
Note: This patch is based on commit 3f399b5d7189 ("platform/x86: wmi: Use ACPI device name in netlink event")
---
 drivers/platform/x86/wmi.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
index 7ef1e82dc61c..3335de4e32b2 100644
--- a/drivers/platform/x86/wmi.c
+++ b/drivers/platform/x86/wmi.c
@@ -1202,8 +1202,7 @@ static int wmi_notify_device(struct device *dev, void *data)
 		wblock->handler(*event, wblock->handler_data);
 	}

-	acpi_bus_generate_netlink_event(wblock->acpi_device->pnp.device_class,
-					acpi_dev_name(wblock->acpi_device), *event, 0);
+	acpi_bus_generate_netlink_event("wmi", acpi_dev_name(wblock->acpi_device), *event, 0);

 	return -EBUSY;
 }
--
2.39.2