platform/x86: wmi: Skip blocks with zero instances

[platform/kernel/linux-starfive.git] / drivers / platform / x86 / wmi.c

diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
index 317c907..d75a0ae 100644 (file)
--- 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;