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SubjectRe: [PATCH v6 16/17] media: v4l2: async: Remove notifier subdevs array
Hi Steve,

On Mon, Jul 23, 2018 at 09:44:57AM -0700, Steve Longerbeam wrote:
>
>
> On 07/23/2018 05:35 AM, Sakari Ailus wrote:
> >Hi Steve,
> >
> >Thanks for the update.
> >
> >On Mon, Jul 09, 2018 at 03:39:16PM -0700, Steve Longerbeam wrote:
> >>All platform drivers have been converted to use
> >>v4l2_async_notifier_add_subdev(), in place of adding
> >>asd's to the notifier subdevs array. So the subdevs
> >>array can now be removed from struct v4l2_async_notifier,
> >>and remove the backward compatibility support for that
> >>array in v4l2-async.c.
> >>
> >>Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
> >This set removes the subdevs and num_subdevs fieldsfrom the notifier (as
> >discussed previously) but it doesn't include the corresponding
> >driver changes. Is there a patch missing from the set?
>
> Hi Sakari, yes somehow patch 15/17 (the large patch to all drivers)
> got dropped by the ML, maybe because the cc-list was too big?
>
> I will resend with only linux-media and cc: you.

For the Renesas CEU and Renesas R-Car VIN you can add my:

Tested-by: Jacopo Mondi <jacopo+renesas@jmondi.org>

I would have a very small comment on the renesas-ceu.c patch. I'm copying
the hunk here below as the patch didn't reach the mailing list

>@@ -1562,40 +1557,46 @@ static int ceu_parse_dt(struct ceu_device *ceudev)
> dev_err(ceudev->dev,
> "No subdevice connected on endpoint %u.\n", i);
> ret = -ENODEV;
>- goto error_put_node;
>+ goto error_cleanup;
> }
>
> ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep), &fw_ep);
> if (ret) {
> if (ret) {
> dev_err(ceudev->dev,
> "Unable to parse endpoint #%u.\n", i);
>- goto error_put_node;
>+ goto error_cleanup;
> }
>
> if (fw_ep.bus_type != V4L2_MBUS_PARALLEL) {
> dev_err(ceudev->dev,
> "Only parallel input supported.\n");
> ret = -EINVAL;
>- goto error_put_node;
>+ goto error_cleanup;
> }
>
> /* Setup the ceu subdevice and the async subdevice. */
> ceu_sd = &ceudev->subdevs[i];
> INIT_LIST_HEAD(&ceu_sd->asd.list);
>
>+ remote = of_graph_get_remote_port_parent(ep);
> ceu_sd->mbus_flags = fw_ep.bus.parallel.flags;
> ceu_sd->asd.match_type = V4L2_ASYNC_MATCH_FWNODE;
>- ceu_sd->asd.match.fwnode =
>- fwnode_graph_get_remote_port_parent(
>- of_fwnode_handle(ep));
>+ ceu_sd->asd.match.fwnode = of_fwnode_handle(remote);
>+
>+ ret = v4l2_async_notifier_add_subdev(&ceudev->notifier,
>+ &ceu_sd->asd);
>+ if (ret) {
>+ of_node_put(remote);

^^^ The 'remote' device node is only put in
the error path
>
>+ goto error_cleanup;
>+ }
>
>- ceudev->asds[i] = &ceu_sd->asd;
> of_node_put(ep);
> }
>
> return num_ep;
>
>-error_put_node:
>+error_cleanup:
>+ v4l2_async_notifier_cleanup(&ceudev->notifier);
> of_node_put(ep);
> return ret;
> }

Thanks
j
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