Commit de1ca06b authored by Kees Cook's avatar Kees Cook Committed by Sebastian Reichel
Browse files

power: supply: axp20x_usb_power: Annotate struct axp20x_usb_power 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 axp20x_usb_power.

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



Cc: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: default avatarKees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20230922175358.work.774-kees@kernel.org


Signed-off-by: default avatarSebastian Reichel <sebastian.reichel@collabora.com>
parent 7daa3bd4

drivers/power/supply/axp20x_usb_power.c

+1 −1
Original line number Diff line number Diff line
@@ -73,7 +73,7 @@ struct axp20x_usb_power { 
	unsigned int old_status;

	unsigned int online;

	unsigned int num_irqs;

	unsigned int irqs[];

	unsigned int irqs[] __counted_by(num_irqs);

};



static bool axp20x_usb_vbus_needs_polling(struct axp20x_usb_power *power)