Re: [PATCH V6 3/7] device property: Introduce a common API to fetch device match data

[Sakari Ailus]

On Thu, Dec 07, 2017 at 03:17:52PM -0500, Sinan Kaya wrote:
> On 12/7/2017 7:40 AM, Sakari Ailus wrote:
> > On Tue, Dec 05, 2017 at 12:04:48PM -0500, Sinan Kaya wrote:
> >> @@ -101,6 +103,8 @@ struct fwnode_operations {
> >>  	(*graph_get_port_parent)(struct fwnode_handle *fwnode);
> >>  	int (*graph_parse_endpoint)(const struct fwnode_handle *fwnode,
> >>  				    struct fwnode_endpoint *endpoint);
> >> +	void *(*get_match_data)(const struct fwnode_handle *fwnode,
> >> +				struct device *dev);
> > 
> > You can make dev const, too.
> > 
> 
> done, I couldn't change device_get_match_data() parameter const due to
> dev_fwnode() function.
> 
>                  from /local/mnt/workspace/projects/caf/kernel/drivers/base/property.c:13:
> 
> /local/mnt/workspace/projects/caf/kernel/drivers/base/property.c:1341:39: warning: passing argument 1 of 'dev_fwnode' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
>   return fwnode_call_ptr_op(dev_fwnode(dev), device_get_match_data,

Right. Makes sense.

I guess it's not perhaps worth it introducing dev_fwnode_const just for
this. devices are seldom if ever const anyway.

-- 
Sakari Ailus
e-mail: sakari.ailus@xxxxxx