Hi Armin, On 1/21/24 21:08, Armin Wolf wrote: > The device name inside the ACPI netlink event is limited to > 15 characters, so the WMI device name will get truncated. > > This can be observed with kacpimon when receiving an event > from WMI device "9DBB5994-A997-11DA-B012-B622A1EF5492": > > netlink: 9DBB5994-A997- 000000d0 00000000 > > Fix this by using the shorter device name from the ACPI > bus device instead. This still allows users to uniquely > identify the WMI device by using the notify id (0xd0). > > Signed-off-by: Armin Wolf <W_Armin@xxxxxx> > --- > Changes since v1: > - use acpi_dev_name() helper function I'm a bit divided on this patch. I agree the new way of doing things is better, but technically this is a bit of a userspace API break. I guess we could hope that nothing depends on the old netlink API format / name but I'm not sure we can rely on that ... Ilpo, Andy do you have any opinion on this ? Regards, Hans > --- > drivers/platform/x86/wmi.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c > index a7cfcbf92432..c61860db66ed 100644 > --- a/drivers/platform/x86/wmi.c > +++ b/drivers/platform/x86/wmi.c > @@ -1202,7 +1202,7 @@ static int wmi_notify_device(struct device *dev, void *data) > } > > acpi_bus_generate_netlink_event(wblock->acpi_device->pnp.device_class, > - dev_name(&wblock->dev.dev), *event, 0); > + acpi_dev_name(wblock->acpi_device), *event, 0); > > return -EBUSY; > } > -- > 2.39.2 >
