Re: [PATCH] base: soc: Handle custom soc information sysfs entries

[mnalajal]

On 2019-10-03 16:22, Stephen Boyd wrote:
> Quoting Murali Nalajala (2019-10-02 17:06:14)
> > @@ -121,6 +118,7 @@ static void soc_release(struct device *dev)
> >  struct soc_device *soc_device_register(struct soc_device_attribute 
> > *soc_dev_attr)
> >  {
> >         struct soc_device *soc_dev;
> > +       const struct attribute_group **soc_attr_groups = NULL;
>
> Don't initialize this to NULL because it is only tested after it's been
> unconditionally assigned to the result of the allocation.
Done
> >         int ret;
> >
> >         if (!soc_bus_type.p) {
> > @@ -136,10 +134,20 @@ struct soc_device *soc_device_register(struct 
> > soc_device_attribute *soc_dev_attr
> >                 goto out1;
> >         }
> >
> > +       soc_attr_groups = kzalloc(sizeof(*soc_attr_groups) *
>
> Please use kcalloc() instead and drop the define for NUM_ATTR_GROUPS
> because it's used once.
done
> > +                                               NUM_ATTR_GROUPS, 
> > GFP_KERNEL);
> > +       if (!soc_attr_groups) {
> > +               ret = -ENOMEM;
> > +               goto out2;
> > +       }
> > +       soc_attr_groups[0] = &soc_attr_group;
> > +       soc_attr_groups[1] = soc_dev_attr->custom_attr_group;
> > +       soc_attr_groups[2] = NULL;
>
> Drop this assignment to NULL because kzalloc() and kcalloc() zero out
> the memory anyway.
done