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

Stephen Boyd
2019-10-03T23:23:05Z

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.

> 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.

> + 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.