Hi, On 1/24/24 20:07, Armin Wolf wrote: > 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, an empty string is being passed: > > netlink: PNP0C14:01 000000d0 00000000 > > Fix this by initializing the ACPI device class during probe. > > Signed-off-by: Armin Wolf <W_Armin@xxxxxx> > --- > Note: This patch is based on commit 3f399b5d7189 ("platform/x86: wmi: Use ACPI device name in netlink event") > --- > drivers/platform/x86/wmi.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c > index 7ef1e82dc61c..b92425c30a50 100644 > --- a/drivers/platform/x86/wmi.c > +++ b/drivers/platform/x86/wmi.c > @@ -32,6 +32,8 @@ > #include <linux/wmi.h> > #include <linux/fs.h> > > +#define ACPI_WMI_DEVICE_CLASS "wmi" > + > MODULE_AUTHOR("Carlos Corbacho"); > MODULE_DESCRIPTION("ACPI-WMI Mapping Driver"); > MODULE_LICENSE("GPL"); > @@ -1202,7 +1204,7 @@ 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_bus_generate_netlink_event(acpi_device_class(wblock->acpi_device), > acpi_dev_name(wblock->acpi_device), *event, 0); > > return -EBUSY; > @@ -1267,6 +1269,8 @@ static int acpi_wmi_probe(struct platform_device *device) > return -ENODEV; > } > > + strscpy(acpi_device_class(acpi_device), ACPI_WMI_DEVICE_CLASS, sizeof(acpi_device_class)); > + Hmm, I'm not sure if you are supposed to do this when you are not an acpi_driver's add() function. Rafael, do you have any comments on this ? Regards, Hans > wmi_bus_dev = device_create(&wmi_bus_class, &device->dev, MKDEV(0, 0), NULL, "wmi_bus-%s", > dev_name(&device->dev)); > if (IS_ERR(wmi_bus_dev)) > -- > 2.39.2 >