On Fri 2019-08-30 13:14:48, Gustavo A. R. Silva wrote:
> One of the more common cases of allocation size calculations is finding
> the size of a structure that has a zero-sized array at the end, along
> with memory for some number of elements for that array. For example:
>
> struct is31fl32xx_priv {
> ...
> struct is31fl32xx_led_data leds[0];
> };
>
> Make use of the struct_size() helper instead of an open-coded version
> in order to avoid any potential type mistakes.
>
> So, replace the following function:
>
> static inline size_t sizeof_is31fl32xx_priv(int num_leds)
> {
> return sizeof(struct is31fl32xx_priv) +
> (sizeof(struct is31fl32xx_led_data) * num_leds);
> }
>
> with:
>
> struct_size(priv, leds, count)
>
> This code was detected with the help of Coccinelle.
>
> Signed-off-by: Gustavo A. R. Silva <gustavo@xxxxxxxxxxxxxx>
Acked-by: Pavel Machek <pavel@xxxxxx>
Pavel
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