Re: [PATCH v13 02/15] cxl: Share CXL port upstream PCI device lookup

[Dave Jiang <dave.jiang@intel.com>]

On 9/23/26 6:21 PM, Jonathan Cameron wrote:
> 
>>>  
>>>  	/*
>>> @@ -625,11 +612,13 @@ void read_cdat_data(struct cxl_port *port)
>>>  	port->cdat.table = buf->data;
>>>  	port->cdat.length = length;
>>>  
>>> -	return;
>>> +	goto out;
> 
> Confusing flow, just duplicate the pci_dev_put()
> 
>>>  err:
>>>  	/* Don't leave table data allocated on error */
>>>  	devm_kfree(dev, buf);
>>>  	dev_err(dev, "Failed to read/validate CDAT.\n");
>>> +out:
>>> +	pci_dev_put(pdev);  
>>
>> I'd use __free() instead of introducing another goto, especially since this is the ideal
>> use case for it. There should be a free action defined for this, but I can't remember what
>> it's called.
> 
> Don't do that.  See the guidance on where __free should be used in
> cleanup.h.  There are places where it 'could' be used but we don't
> because it adds fragility under potential code refactoring.

Ah yeah because the devm_kzalloc() forcing the goto. Essentially don't mix goto and __cleanup(). 
> 
> Jonathan
> 
> 
> 
> 
>