Re: [PATCH] media: imx: remove code for non-existing config IMX_GPT_ICAP

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Hi Lukas,

On Wed, Nov 23, 2022 at 08:56:06AM +0100, Lukas Bulwahn wrote:
> On Tue, Nov 22, 2022 at 5:09 PM Tommaso Merciai
> <tommaso.merciai@xxxxxxxxxxxxxxxxxxxx> wrote:
> >
> > Hi Lukas,
> >
> > On Tue, Nov 22, 2022 at 02:23:30PM +0100, Lukas Bulwahn wrote:
> > > There never was a config IMX_GPT_ICAP in the repository. So remove the code
> > > conditional on this config and simplify the callers that just called empty
> > > functions.
> > >
> > > Signed-off-by: Lukas Bulwahn <lukas.bulwahn@xxxxxxxxx>
> > > ---
> > >  drivers/staging/media/imx/imx-media-fim.c | 54 -----------------------
> > >  1 file changed, 54 deletions(-)
> > >
> > > diff --git a/drivers/staging/media/imx/imx-media-fim.c b/drivers/staging/media/imx/imx-media-fim.c
> > > index 3a9182933508..19a48eb445fd 100644
> > > --- a/drivers/staging/media/imx/imx-media-fim.c
> > > +++ b/drivers/staging/media/imx/imx-media-fim.c
> > > @@ -187,54 +187,6 @@ static void frame_interval_monitor(struct imx_media_fim *fim,
> > >               send_fim_event(fim, error_avg);
> > >  }
> > >
> > > -#ifdef CONFIG_IMX_GPT_ICAP
> > > -/*
> > > - * Input Capture method of measuring frame intervals. Not subject
> > > - * to interrupt latency.
> > > - */
> > > -static void fim_input_capture_handler(int channel, void *dev_id,
> > > -                                   ktime_t timestamp)
> > > -{
> > > -     struct imx_media_fim *fim = dev_id;
> > > -     unsigned long flags;
> > > -
> > > -     spin_lock_irqsave(&fim->lock, flags);
> > > -
> > > -     frame_interval_monitor(fim, timestamp);
> > > -
> > > -     if (!completion_done(&fim->icap_first_event))
> > > -             complete(&fim->icap_first_event);
> > > -
> > > -     spin_unlock_irqrestore(&fim->lock, flags);
> > > -}
> > > -
> > > -static int fim_request_input_capture(struct imx_media_fim *fim)
> > > -{
> > > -     init_completion(&fim->icap_first_event);
> > > -
> > > -     return mxc_request_input_capture(fim->icap_channel,
> > > -                                      fim_input_capture_handler,
> > > -                                      fim->icap_flags, fim);
> > > -}
> > > -
> > > -static void fim_free_input_capture(struct imx_media_fim *fim)
> > > -{
> > > -     mxc_free_input_capture(fim->icap_channel, fim);
> > > -}
> > > -
> > > -#else /* CONFIG_IMX_GPT_ICAP */
> > > -
> > > -static int fim_request_input_capture(struct imx_media_fim *fim)
> > > -{
> > > -     return 0;
> > > -}
> > > -
> > > -static void fim_free_input_capture(struct imx_media_fim *fim)
> > > -{
> > > -}
> > > -
> > > -#endif /* CONFIG_IMX_GPT_ICAP */
> > > -
> > >  /*
> > >   * In case we are monitoring the first frame interval after streamon
> > >   * (when fim->num_skip = 0), we need a valid fim->last_ts before we
> > > @@ -435,14 +387,8 @@ int imx_media_fim_set_stream(struct imx_media_fim *fim,
> > >               spin_unlock_irqrestore(&fim->lock, flags);
> > >
> > >               if (icap_enabled(fim)) {
> > > -                     ret = fim_request_input_capture(fim);
> > > -                     if (ret)
> > > -                             goto out;
> > >                       fim_acquire_first_ts(fim);
> > >               }
> >
> > As suggested by the checkpatch.pl:
> > WARNING: braces {} are not necessary for single statement blocks
> >
> > > -     } else {
> > > -             if (icap_enabled(fim))
> > > -                     fim_free_input_capture(fim);
> > >       }
> > >
> > >       fim->stream_on = on;
> > > --
> > > 2.17.1
> > >
> >
> 
> Strangely, my checkpatch invocation on next-20221116 did not show that
> warning and I am unaware that I made any specific changes to
> checkpatch or its configuration.
> 
> Anyway, checkpatch and you, Tommaso, are right and the patch can of
> course be improved. I sent out a patch v2:
> 
> https://lore.kernel.org/all/20221123075216.28193-1-lukas.bulwahn@xxxxxxxxx/
> 
> I hope to get an Acked-by: tag from you now. Thanks.

Sorry I miss the tag :)

Acked-by: Tommaso Merciai <tommaso.merciai@xxxxxxxxxxxxxxxxxxxx>

Apply the patch then run:
 scripts/checkpatch.pl -f drivers/staging/media/imx/imx-media-fim.c

Regards,
Tommaso

> 
> Lukas
> 
> > Apart of this, patch looks good to me.
> > Thanks.
> >
> > Regards,
> > Tommaso
> >
> > --
> > Tommaso Merciai
> > Embedded Linux Engineer
> > tommaso.merciai@xxxxxxxxxxxxxxxxxxxx
> > __________________________________
> >
> > Amarula Solutions SRL
> > Via Le Canevare 30, 31100 Treviso, Veneto, IT
> > T. +39 042 243 5310
> > info@xxxxxxxxxxxxxxxxxxxx
> > www.amarulasolutions.com

-- 
Tommaso Merciai
Embedded Linux Engineer
tommaso.merciai@xxxxxxxxxxxxxxxxxxxx
__________________________________

Amarula Solutions SRL
Via Le Canevare 30, 31100 Treviso, Veneto, IT
T. +39 042 243 5310
info@xxxxxxxxxxxxxxxxxxxx
www.amarulasolutions.com



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