diff options
| author |  Armin Wolf <W_Armin@gmx.de>
| 2023-11-29 19:16:54 +0100 |
|---|---|---|
| committer |  Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
| 2023-11-30 13:53:50 +0200 |
| commit | cbf54f37600e874d82886aa3b2f471778cae01ce (patch) | |
| tree | 289c87480d5a70b15fad62eee6ec60b08c81596a /drivers/platform | |
| parent | platform/surface: aggregator: fix recv_buf() return value (diff) | |
| download | linux-cbf54f37600e874d82886aa3b2f471778cae01ce.tar.gz linux-cbf54f37600e874d82886aa3b2f471778cae01ce.tar.bz2 linux-cbf54f37600e874d82886aa3b2f471778cae01ce.zip | |
platform/x86: wmi: Skip blocks with zero instances
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: bff431e49ff5 ("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>
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/wmi.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c index 5c27b4aa9690..5dd22258cb3b 100644 --- a/drivers/platform/x86/wmi.c +++ b/drivers/platform/x86/wmi.c @@ -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; |