linux-kernel - Re: [PATCH v3 3/9] drm: bridge: analogix: Destroy connector when unbinding

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Message-ID: <58E6328E.8090005@rock-chips.com>
Date:   Thu, 06 Apr 2017 20:20:30 +0800
From:   jeffy <jeffy.chen@...k-chips.com>
To:     Andrzej Hajda <a.hajda@...sung.com>, linux-kernel@...r.kernel.org
CC:     Caesar Wang <wxt@...k-chips.com>,
        Tomeu Vizoso <tomeu.vizoso@...labora.com>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        briannorris@...omium.org, dianders@...omium.org,
        dri-devel@...ts.freedesktop.org, tfiga@...omium.org,
        zyw@...k-chips.com, Baoyou Xie <baoyou.xie@...aro.org>
Subject: Re: [PATCH v3 3/9] drm: bridge: analogix: Destroy connector when
 unbinding

Hi Andrzej,

On 04/06/2017 03:19 PM, Andrzej Hajda wrote:
> On 05.04.2017 10:29, Jeffy Chen wrote:
>> Normally we do this in drm_mode_config_cleanup. But analogix dp's
>> connector is allocated in bind, and freed after unbind. So we need
>> to destroy it in unbind to avoid further access.
>>
>> Signed-off-by: Jeffy Chen <jeffy.chen@...k-chips.com>
>
> Reviewed-by: Andrzej Hajda <a.hajda@...sung.com>
>
> One comment below
>
>> ---
>>
>> Changes in v3: None
>> Changes in v2: None
>>
>>   drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
>> index 7b75f82..a96fd55 100644
>> --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
>> +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
>> @@ -1439,6 +1439,7 @@ void analogix_dp_unbind(struct device *dev, struct device *master,
>>   	struct analogix_dp_device *dp = dev_get_drvdata(dev);
>>
>>   	analogix_dp_bridge_disable(dp->bridge);
>
> Not related to the patch, but what about bridge,  above it is only
> disabled, but not detached, encoder cleanup code should do it but it is
> also missing.
right, i should notice there's a drm_encoder_cleanup(dp->encoder) when 
failed to create bridge...thanx for pointing that out :)
>
> Regards
> Andrzej
>
>> +	dp->connector.funcs->destroy(&dp->connector);
>>
>>   	if (dp->plat_data->panel) {
>>   		if (drm_panel_unprepare(dp->plat_data->panel))
>
>
>
>
>