Re: [PATCH] media: i2c: adv7343: add support for asynchronous probing

From: Guennadi Liakhovetski
Date: Sun Jun 23 2013 - 09:30:35 EST


On Sun, 23 Jun 2013, Guennadi Liakhovetski wrote:

> On Sat, 22 Jun 2013, Prabhakar Lad wrote:
>
> > From: "Lad, Prabhakar" <prabhakar.csengg@xxxxxxxxx>
> >
> > Both synchronous and asynchronous adv7343 subdevice probing is supported by
> > this patch.
> >
> > Signed-off-by: Lad, Prabhakar <prabhakar.csengg@xxxxxxxxx>
> > Cc: Guennadi Liakhovetski <g.liakhovetski@xxxxxx>
> > Cc: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> > Cc: Hans Verkuil <hverkuil@xxxxxxxxx>
> > Cc: Sakari Ailus <sakari.ailus@xxxxxx>
> > Cc: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
> > ---
> > drivers/media/i2c/adv7343.c | 15 +++++++++++----
> > 1 file changed, 11 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/media/i2c/adv7343.c b/drivers/media/i2c/adv7343.c
> > index 7606218..8080c2c 100644
> > --- a/drivers/media/i2c/adv7343.c
> > +++ b/drivers/media/i2c/adv7343.c
> > @@ -27,6 +27,7 @@
> > #include <linux/uaccess.h>
> >
> > #include <media/adv7343.h>
> > +#include <media/v4l2-async.h>
> > #include <media/v4l2-device.h>
> > #include <media/v4l2-ctrls.h>
> >
> > @@ -445,16 +446,21 @@ static int adv7343_probe(struct i2c_client *client,
> > ADV7343_GAIN_DEF);
> > state->sd.ctrl_handler = &state->hdl;
> > if (state->hdl.error) {
> > - int err = state->hdl.error;
> > -
> > - v4l2_ctrl_handler_free(&state->hdl);
> > - return err;
> > + err = state->hdl.error;
> > + goto done;
>
> What does this have to do with asynchronous probing? Please, remove.

Uhm, sorry, shouldn't review patches after that kind of a weekend :)

Acked-by: Guennadi Liakhovetski <g.liakhovetski@xxxxxx>

Guennadi

>
> > }
> > v4l2_ctrl_handler_setup(&state->hdl);
> >
> > err = adv7343_initialize(&state->sd);
> > if (err)
> > + goto done;
> > +
> > + err = v4l2_async_register_subdev(&state->sd);
> > +
> > +done:
>
> This label won't be needed then either.
>
> Thanks
> Guennadi
>
> > + if (err < 0)
> > v4l2_ctrl_handler_free(&state->hdl);
> > +
> > return err;
> > }
> >
> > @@ -463,6 +469,7 @@ static int adv7343_remove(struct i2c_client *client)
> > struct v4l2_subdev *sd = i2c_get_clientdata(client);
> > struct adv7343_state *state = to_state(sd);
> >
> > + v4l2_async_unregister_subdev(&state->sd);
> > v4l2_device_unregister_subdev(sd);
> > v4l2_ctrl_handler_free(&state->hdl);
> >
> > --
> > 1.7.9.5
> >
>
> ---
> Guennadi Liakhovetski, Ph.D.
> Freelance Open-Source Software Developer
> http://www.open-technology.de/
>

---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/
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