Commit 476301c1 authored by Kees Cook's avatar Kees Cook Committed by Lee Jones
Browse files

leds: mt6360: Annotate struct mt6360_priv with __counted_by 

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 mt6360_priv.

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



Signed-off-by: default avatarKees Cook <keescook@chromium.org>
Reviewed-by: default avatarGustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: default avatarAngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230915201020.never.433-kees@kernel.org


Signed-off-by: default avatarLee Jones <lee@kernel.org>
parent 60613020

drivers/leds/flash/leds-mt6360.c

+1 −1
Original line number Diff line number Diff line
@@ -91,7 +91,7 @@ struct mt6360_priv { 
	unsigned int fled_torch_used;

	unsigned int leds_active;

	unsigned int leds_count;

	struct mt6360_led leds[];

	struct mt6360_led leds[] __counted_by(leds_count);

};



static int mt6360_mc_brightness_set(struct led_classdev *lcdev,