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platform/x86: wmi: Skip blocks with zero instances

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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@gmail.com>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218188
Fixes: bff431e49f ("ACPI: WMI: Add ACPI-WMI mapping driver")
Tested-by: Alexis Belmonte <alexbelm48@gmail.com>
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20231129181654.5800-1-W_Armin@gmx.de
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Armin Wolf 2023-11-29 19:16:54 +01:00 committed by Ilpo Järvinen
parent c8820c92ca
commit cbf54f3760
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1 changed files with 5 additions and 0 deletions
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5
drivers/platform/x86/wmi.c
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@ -1340,6 +1340,11 @@ static int parse_wdg(struct device *wmi_bus_dev, struct platform_device *pdev)
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;