6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Armin Wolf <W_Armin@xxxxxx> [ Upstream commit cbf54f37600e874d82886aa3b2f471778cae01ce ] Some machines like the HP Omen 17 ck2000nf contain WMI blocks with zero instances, so any WMI driver which tries to handle the associated WMI device will fail. Skip such WMI blocks to avoid confusing any WMI drivers. Reported-by: Alexis Belmonte <alexbelm48@xxxxxxxxx> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218188 Fixes: bff431e49ff5 ("ACPI: WMI: Add ACPI-WMI mapping driver") Tested-by: Alexis Belmonte <alexbelm48@xxxxxxxxx> Signed-off-by: Armin Wolf <W_Armin@xxxxxx> Link: https://lore.kernel.org/r/20231129181654.5800-1-W_Armin@xxxxxx Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/platform/x86/wmi.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c index 317c907304149..d75a0ae9cd0c5 100644 --- a/drivers/platform/x86/wmi.c +++ b/drivers/platform/x86/wmi.c @@ -1285,6 +1285,11 @@ static int parse_wdg(struct device *wmi_bus_dev, struct acpi_device *device) if (debug_dump_wdg) wmi_dump_wdg(&gblock[i]); + if (!gblock[i].instance_count) { + dev_info(wmi_bus_dev, FW_INFO "%pUL has zero instances\n", &gblock[i].guid); + continue; + } + if (guid_already_parsed_for_legacy(device, &gblock[i].guid)) continue; -- 2.42.0
