Re: [PATCH -next 8/8] soc: ti: knav_qmss_queue: Simplify with scoped for each OF child loop

[Jinjie Ruan <ruanjinjie@xxxxxxxxxx>]

On 2024/8/29 23:58, Kousik Sanagavarapu wrote:
> Jinjie Ruan <ruanjinjie@xxxxxxxxxx> writes:
>> @@ -1080,17 +1080,13 @@ static int knav_queue_setup_regions(struct knav_device *kdev,
>>  {
>>  	struct device *dev = kdev->dev;
>>  	struct knav_region *region;
>> -	struct device_node *child;
>>  	u32 temp[2];
>>  	int ret;
>>  
>> -	for_each_child_of_node(regions, child) {
>> +	for_each_child_of_node_scoped(regions, child) {
> 
> Are you sure using *_scoped() is better here?  Since it seems that we
> need the memory pointed to by "child" in cases where we don't go into an
> error path.

Hi, Jonathan, could you help review this code?

> 
>>  		region = devm_kzalloc(dev, sizeof(*region), GFP_KERNEL);
>> -		if (!region) {
>> -			of_node_put(child);
>> -			dev_err(dev, "out of memory allocating region\n");
>> -			return -ENOMEM;
>> -		}
>> +		if (!region)
>> +			return dev_err_probe(dev, -ENOMEM, "out of memory allocating region\n");
>>  
>>  		region->name = knav_queue_find_name(child);
>>  		of_property_read_u32(child, "id", &region->id);
> 
> Similarly in most of the other cases in this series where a similar
> change is done.
> 
> Also FYI, as for dev_err_probe(), I think I covered all of them in this
> file and a patch for it is currently sitting in ti-drivers-soc-next.
> 
> Thanks