On 18-09-2013 16:44, Joe Perches wrote:
> On Wed, 2013-09-18 at 16:31 -0400, Eduardo Valentin wrote:
>
>> +/**
>> + * of_parse_thermal_zones - parse device tree thermal data
>> + *
>> + * Initialization function that can be called by machine initialization
>> + * code to parse thermal data and populate the thermal framework
>> + * with hardware thermal zones info. This function only parses thermal zones.
>> + * Cooling devices and sensor devices nodes are supposed to be parsed
>> + * by their respective drivers.
>> + *
>> + * Return: 0 on success, proper error code otherwise
>> + *
>> + */
>> +int __init of_parse_thermal_zones(void)
>> +{
>> + struct device_node *np, *child;
>> + struct __thermal_zone *tz;
>> + struct thermal_zone_device_ops *ops;
>> +
>> + np = of_find_node_by_name(NULL, "thermal-zones");
>> + if (!np) {
>> + pr_err("unable to find thermal zones\n");
>> + return 0;
>
> return 0? This is success?
This case is success because there should be systems without thermal DT
entries.
>
>> + }
>> +
>> + for_each_child_of_node(np, child) {
>> + struct thermal_zone_device *zone;
>> + struct thermal_zone_params *tzp;
>> +
>> + tz = thermal_of_build_thermal_zone(child);
>> + if (IS_ERR(tz)) {
>> + pr_err("failed to build thermal zone %ld\n",
>> + PTR_ERR(tz));
>> + return 0;
>> + }
>> +
>> + ops = kzalloc(sizeof(*ops), GFP_KERNEL);
>> + if (!ops)
>> + return 0;
>> +
>> + memcpy(ops, &of_thermal_ops, sizeof(*ops));
>
> kmemdup instead of alloc/memcpy
>
OK.
>> + tzp = kzalloc(sizeof(*tzp), GFP_KERNEL);
>> + if (!ops)
>> + return 0;
>> +
These should not be 0 though.
>> + /* No hwmon because there might be hwmon drivers registering */
>> + tzp->no_hwmon = true;
>> +
>> + zone = thermal_zone_device_register(child->name, tz->ntrips,
>> + 0, tz,
>> + ops, tzp,
>> + tz->passive_delay,
>> + tz->polling_delay);
>> + if (IS_ERR(zone))
>> + pr_err("Failed to build %s zone %ld\n", child->name,
>> + PTR_ERR(zone));
>> + }
>> + return 0;
This one is correct.
>> +}
>
> All returns are 0, always successful?
hmmm.. I am sending after reworking the return code of this function.
>
>
>
>
--
You have got to be excited about what you are doing. (L. Lamport)
Eduardo Valentin
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