Re: [PATCH] ASoC: Intel: Handle device properties with software node API

From: Pierre-Louis Bossart
Date: Fri Jul 16 2021 - 14:43:52 EST


Hi Heikki,
Going back to this initial patch, I have a doubt based on Andy Shevchenko's comment on an update [1]

> The function device_add_properties() is going to be removed.
> Replacing it with software node API equivalents.

The replacement pattern takes this one line:

> - ret = device_add_properties(sdw_dev, props);

which gets replaced by

> + fwnode = fwnode_create_software_node(props, NULL);
> + if (IS_ERR(fwnode)) {
> + return PTR_ERR(fwnode);
> }
>
> + ret = device_add_software_node(sdw_dev, to_software_node(fwnode));
> +
> + fwnode_handle_put(fwnode);

is the fwnode_handle_put() actually required here? This seems to work fine in our tests but I wasn't able to find in the code a matching _get().

Thanks for any pointers/comments!
-Pierre

[1] https://github.com/thesofproject/linux/pull/3041#discussion_r671450168