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| author |  Armin Wolf <W_Armin@gmx.de>
| 2024-02-26 20:35:56 +0100 |
|---|---|---|
| committer |  Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
| 2024-03-12 12:47:35 +0200 |
| commit | a66ccfc2535418b536b1203b65f87c4f501f6bdd (patch) | |
| tree | 6f6e2c0f2ff5de5e7fd26ef3763ea9fd9ea5d989 /drivers/hwmon | |
| parent | platform/x86: wmi: Ignore duplicated GUIDs in legacy matches (diff) | |
| download | linux-a66ccfc2535418b536b1203b65f87c4f501f6bdd.tar.gz linux-a66ccfc2535418b536b1203b65f87c4f501f6bdd.tar.bz2 linux-a66ccfc2535418b536b1203b65f87c4f501f6bdd.zip | |
platform/x86: wmi: Do not instantiate older WMI drivers multiple times
Many older WMI drivers cannot be instantiated multiple times for
two reasons:
- they are using the legacy GUID-based WMI API
- they are singletons (with global state)
Prevent such WMI drivers from binding to WMI devices with a duplicated
GUID, as this would mean that the WMI driver will be instantiated at
least two times (one for the original GUID and one for the duplicated
GUID).
WMI drivers which can be instantiated multiple times can signal this
by setting a flag inside struct wmi_driver.
Tested on a ASUS Prime B650-Plus.
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20240226193557.2888-2-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/hwmon')
| -rw-r--r-- | drivers/hwmon/dell-smm-hwmon.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/hwmon/dell-smm-hwmon.c b/drivers/hwmon/dell-smm-hwmon.c index 6d8c0f328b7b..168d669c4eca 100644 --- a/drivers/hwmon/dell-smm-hwmon.c +++ b/drivers/hwmon/dell-smm-hwmon.c @@ -1587,6 +1587,7 @@ static struct wmi_driver dell_smm_wmi_driver = { }, .id_table = dell_smm_wmi_id_table, .probe = dell_smm_wmi_probe, + .no_singleton = true, }; /* |