Armin Wolf 44a96796d2 platform/x86: wmi: Fix opening of char device ... [ Upstream commit eba9ac7aba ] Since commit fa1f68db6c ("drivers: misc: pass miscdevice pointer via file private data"), the miscdevice stores a pointer to itself inside filp->private_data, which means that private_data will not be NULL when wmi_char_open() is called. This might cause memory corruption should wmi_char_open() be unable to find its driver, something which can happen when the associated WMI device is deleted in wmi_free_devices(). Fix the problem by using the miscdevice pointer to retrieve the WMI device data associated with a char device using container_of(). This also avoids wmi_char_open() picking a wrong WMI device bound to a driver with the same name as the original driver. Fixes: 44b6b76611 ("platform/x86: wmi: create userspace interface for drivers") Signed-off-by: Armin Wolf <W_Armin@gmx.de> Link: https://lore.kernel.org/r/20231020211005.38216-5-W_Armin@gmx.de Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-11-20 11:51:57 +01:00
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chrome	platform/chrome: chromeos_acpi: print hex string for ACPI_TYPE_BUFFER	2023-09-13 09:43:03 +02:00
goldfish	…
loongarch	…
mellanox	platform/mellanox: mlxbf-tmfifo: Fix a warning message	2023-11-08 14:11:01 +01:00
mips	…
olpc	…
surface	platform/surface: platform_profile: Propagate error if profile registration fails	2023-10-25 12:03:15 +02:00
x86	platform/x86: wmi: Fix opening of char device	2023-11-20 11:51:57 +01:00
Kconfig	…
Makefile	…