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author | Armin Wolf <W_Armin@gmx.de> | 2024-02-12 21:50:16 +0300 |
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committer | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2024-02-13 14:18:11 +0300 |
commit | 5b559e8ab01c8d7a92478f8143ba844161292203 (patch) | |
tree | 8399dd894c41116376a2a1f76a6fa48effbf1bb9 /drivers/platform/mellanox/mlxbf-pmc.c | |
parent | d16c9a3d97d1905392e4b86ac9e25fa6c2d5faa3 (diff) | |
download | linux-5b559e8ab01c8d7a92478f8143ba844161292203.tar.xz |
platform/x86: wmi: Make input buffer mandatory when evaluating methods
The ACPI-WMI specification declares in the section "ACPI Control Method
Naming Conventions and Functionality for Windows 2000 Instrumentation"
that a WMxx control method takes 3 arguments: instance, method id and
argument buffer. This is also the case even when the underlying WMI
method does not have any input arguments.
So if a WMI driver evaluates a WMI method without passing an input
buffer, ACPICA will log a warning complaining that the third argument
is missing.
Prevent this by checking that a input buffer was passed, and return
an error if this was not the case.
Tested on a Asus PRIME B650-Plus.
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20240212185016.5494-1-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/mellanox/mlxbf-pmc.c')
0 files changed, 0 insertions, 0 deletions