[PATCH v2 1/4] drm/bridge: dw-hdmi: add cec notifier support

[laurent.pinchart@ideasonboard.com (Laurent Pinchart)]

Hi Russell,

Thank you for the patch.

On Monday 31 Jul 2017 15:29:41 Russell King wrote:
> Add CEC notifier support to the HDMI bridge driver, so that the CEC
> part of the IP can receive its physical address.
> 
> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
> ---
>  drivers/gpu/drm/bridge/synopsys/Kconfig   |  1 +
>  drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 22 +++++++++++++++++++++-
>  2 files changed, 22 insertions(+), 1 deletion(-)

[snip]

> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index
> ead11242c4b9..82e55ee8e4fa 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c

[snip]

> @@ -2376,6 +2387,12 @@ __dw_hdmi_probe(struct platform_device *pdev,
>  	if (ret)
>  		goto err_iahb;
> 
> +	hdmi->cec_notifier = cec_notifier_get(dev);
> +	if (!hdmi->cec_notifier) {
> +		ret = -ENOMEM;
> +		goto err_iahb;
> +	}
> +
>  	/*
>  	 * To prevent overflows in HDMI_IH_FC_STAT2, set the clk regenerator
>  	 * N and cts values before enabling phy
> @@ -2452,6 +2469,9 @@ __dw_hdmi_probe(struct platform_device *pdev,
>  		hdmi->ddc = NULL;
>  	}
> 
> +	if (hdmi->cec_notifier)
> +		cec_notifier_put(hdmi->cec_notifier);
> +
>  	clk_disable_unprepare(hdmi->iahb_clk);
>  err_isfr:
>  	clk_disable_unprepare(hdmi->isfr_clk);

I'm not very familiar yet with the CEC API so I made have missed something, 
but shouldn't you call cec_notifier_put() in the remove() handler ?

-- 
Regards,

Laurent Pinchart