Hi,
On Tue, Oct 04, 2016 at 10:28:18AM +0800, Chen-Yu Tsai wrote:
> > if (sunxi_pctrl_has_drive_prop(node)) {
> > int drive = sunxi_pctrl_parse_drive_prop(node);
> > - if (drive < 0)
> > + if (drive < 0) {
> > + ret = -EINVAL;
>
> Why not just pass the error code returned from the parse function?
Yep, I'll change that.
> > - (*map)[i].type = PIN_MAP_TYPE_CONFIGS_GROUP;
> > - (*map)[i].data.configs.group_or_pin = group;
> > - (*map)[i].data.configs.configs = pinconfig;
> > - (*map)[i].data.configs.num_configs = configlen;
> > -
> > - i++;
> > + if (pinconfig) {
> > + (*map)[i].type = PIN_MAP_TYPE_CONFIGS_GROUP;
> > + (*map)[i].data.configs.group_or_pin = group;
> > + (*map)[i].data.configs.configs = pinconfig;
> > + (*map)[i].data.configs.num_configs = configlen;
> > + i++;
> > + }
> > }
> >
> > - *num_maps = nmaps;
> > + *num_maps = i;
>
> Thought: should we do a krealloc to shrink the array?
Yep, I'll make an additional patch to fix that.
>
> >
> > return 0;
> >
> > @@ -342,8 +357,13 @@ static void sunxi_pctrl_dt_free_map(struct pinctrl_dev *pctldev,
> > struct pinctrl_map *map,
> > unsigned num_maps)
> > {
> > + unsigned long *pinconfig;
> > +
> > /* All the maps have the same pin config, free only the first one */
> > - kfree(map[0].data.configs.configs);
> > + pinconfig = map[0].data.configs.configs;
> > + if (pinconfig)
> > + kfree(pinconfig);
>
> Passing NULL to kfree is allowed. (It becomes a no-op.)
> So you could leave this function alone.
And I'll change that as well.
Thanks!
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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