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Driver using the buffer-based WMI API usually reject buffers resulting
from WMI method calls or block queries if they contain not enough data.
Prepare the WMI core for assisting in this by automatically rejecting
undersized unmarshalling results.
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://patch.msgid.link/20260406203237.2970-4-W_Armin@gmx.de
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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When compiling the WMI string kunit tests using llvm, the compiler
will issue a warning about "oversized_test_utf8_string" being unused.
This happens because the test case that was supposed to use said
variable was accidentally omitted when adding the kunit tests.
Fix this by adding the aforementioned test case.
Fixes: 0e1a8143e797 ("platform/wmi: Add kunit test for the string conversion code")
Reported-by: Nathan Chancellor <nathan@kernel.org>
Closes: https://lore.kernel.org/platform-driver-x86/20260122234521.GA413183@ax162/
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://patch.msgid.link/20260123211537.4448-1-W_Armin@gmx.de
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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The string conversion frunctions provided by the WMI driver core
have no dependencies on the remaining WMI API, making them suitable
for unit tests.
Implement such a unit test using kunit. Those unit tests verify that
converting between WMI strings and UTF8 strings works as expected.
They also verify that edge cases are handled correctly.
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://patch.msgid.link/20260116204116.4030-5-W_Armin@gmx.de
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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The marshalling code used by the WMI driver core is implemented as
a separate component, suitable for unit tests.
Implmented such a unit test using KUnit. Those unit tests verify that
ACPI objects are correctly converted into WMI buffers and that WMI
strings are correctly converted into ACPI strings. They also verify
that invalid ACPI data (like nested packages) is rejected.
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://patch.msgid.link/20260116204116.4030-3-W_Armin@gmx.de
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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