On Mon, Nov 30, 2020 at 07:29:00PM +0200, Andy Shevchenko wrote:
> On Mon, Nov 30, 2020 at 01:31:13PM +0000, Daniel Scally wrote:
> > This function is used to find fwnode endpoints against a device. In
> > some instances those endpoints are software nodes which are children of
> > fwnode->secondary. Add support to fwnode_graph_get_endpoint_by_id() to
> > find those endpoints by recursively calling itself passing the ptr to
> > fwnode->secondary in the event no endpoint is found for the primary.
> 
> One nit below, after addressing:
> Reviewed-by: Andy Shevchenko <andriy.shevche...@linux.intel.com>
> 
> ...
> 
> > +   if (!best_ep && fwnode && !IS_ERR_OR_NULL(fwnode->secondary))
> > +           return fwnode_graph_get_endpoint_by_id(fwnode->secondary, port,
> > +                                                  endpoint, flags);
> 
> >     return best_ep;
> 
> Can we, please, do
> 
>       if (best_ep)
>               return best_ep;
> 
>       if (fwnode && !IS_ERR_OR_NULL(fwnode->secondary))
>               return fwnode_graph_get_endpoint_by_id(fwnode->secondary, port,
>                                                      endpoint, flags);
> 
>       return NULL;
> 
> ?
> 
> This 'if (fwnode && !IS_ERR_OR_NULL(fwnode->secondary))' becomes kinda
> idiomatic to the cases when we need to proceed primary followed by the
> secondary in cases where it's not already done.

We could also move the !fwnode check to the beginning of the function.

> >  }
> >  EXPORT_SYMBOL_GPL(fwnode_graph_get_endpoint_by_id);

-- 
Regards,

Laurent Pinchart

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