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regulator: da9063: Annotate struct da9063_regulators with __counted_by

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Prepare for the coming implementation by GCC and Clang of the __counted_by
attribute. Flexible array members annotated with __counted_by can have
their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS
(for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
functions).

As found with Coccinelle[1], add __counted_by for struct da9063_regulators.

[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci

Cc: Support Opensource <support.opensource@diasemi.com>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230922175207.work.576-kees@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kees Cook 2023-09-22 10:52:07 -07:00 committed by Mark Brown
parent 907f2a4835
commit 1096f9fa2b
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1 changed files with 1 additions and 1 deletions
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drivers/regulator/da9063-regulator.c
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@ -158,7 +158,7 @@ struct da9063_regulator {
struct da9063_regulators {
unsigned int n_regulators;
/* Array size to be defined during init. Keep at end. */
struct da9063_regulator regulator[];
struct da9063_regulator regulator[] __counted_by(n_regulators);
};
/* BUCK modes for DA9063 */