Re: [PATCH -next] pinctrl: sunxi: fix 'pctrl->functions' allocation in sunxi_pinctrl_build_state

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Thu, Sep 20, 2018 at 7:00 PM YueHaibing <yuehaibing@xxxxxxxxxx> wrote:

> fixes following Smatch static check warning:
>
>  ./drivers/pinctrl/sunxi/pinctrl-sunxi.c:1112 sunxi_pinctrl_build_state()
>  warn: passing devm_ allocated variable to kfree. 'pctrl->functions'
>
> As we will be calling krealloc() on pointer 'pctrl->functions', which means
> kfree() will be called in there, devm_kzalloc() shouldn't be used with
> the allocation in the first place.  Fix the warning by calling kcalloc()
> and managing the free procedure in error path on our own.
>
> Fixes: 0e37f88d9ad8 ("ARM: sunxi: Add pinctrl driver for Allwinner SoCs")
> Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>

Patch applied with Maxime's ACK.

Yours,
Linus Walleij