On Tue, Jun 14, 2022 at 1:22 AM AngeloGioacchino Del Regno
<angelogioacchino.delregno@xxxxxxxxxxxxx> wrote:
>
> Il 09/06/22 20:09, Prashant Malani ha scritto:
> > Parse the "switches" node, if available, and count and store the number
> > of Type-C switches within it. Since we currently don't do anything with
> > this info, no functional changes are expected from this change.
> >
> > This patch sets a foundation for the actual registering of Type-C
> > switches with the Type-C connector class framework.
> >
> > Signed-off-by: Prashant Malani <pmalani@xxxxxxxxxxxx>
> > ---
> >
> > Changes since v1:
> > - No changes.
> >
> > drivers/gpu/drm/bridge/analogix/anx7625.c | 20 ++++++++++++++++++++
> > drivers/gpu/drm/bridge/analogix/anx7625.h | 1 +
> > 2 files changed, 21 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c
> > index 53a5da6c49dd..07ed44c6b839 100644
> > --- a/drivers/gpu/drm/bridge/analogix/anx7625.c
> > +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c
> > @@ -2581,6 +2581,22 @@ static void anx7625_runtime_disable(void *data)
> > pm_runtime_disable(data);
> > }
> >
> > +static int anx7625_register_typec_switches(struct device *device, struct anx7625_data *ctx)
> > +{
> > + struct device_node *of = NULL;
> > + int ret = 0;
> > +
> > + of = of_get_child_by_name(device->of_node, "switches");
> > + if (!of)
> > + return -ENODEV;
> > +
> > + ctx->num_typec_switches = of_get_child_count(of);
> > + if (ctx->num_typec_switches <= 0)
> > + return -ENODEV;
> > +
> > + return ret;
>
> You aren't using the `ret` variable for anything other than returning zero:
> remove it and simply return 0 here.
The very next patch does use it, but sure I'll remove it from here and
introduce it in v6.
>
> > +}
> > +
> > static int anx7625_i2c_probe(struct i2c_client *client,
> > const struct i2c_device_id *id)
> > {
> > @@ -2686,6 +2702,10 @@ static int anx7625_i2c_probe(struct i2c_client *client,
> > if (platform->pdata.intp_irq)
> > queue_work(platform->workqueue, &platform->work);
> >
> > + ret = anx7625_register_typec_switches(dev, platform);
> > + if (ret)
> > + dev_info(dev, "Didn't register Type C switches, err: %d\n", ret);
>
> Type-C switches are optional for this driver and this will print a sort of error
> on boards that are *not* declaring any switches on purpose (because perhaps they
> don't have any, or for any other reason).
>
> Even though this is a dev_info and not a dev_err, it's still printing an alarming
> (and useless, in the aforementioned case) message.
I'll go ahead and convert this to dev_warn, but only trigger if there
is an error other than ENODEV.
>
> Please fix this.
>
> Regards,
> Angelo
>
