linux-kernel - Re: [PATCH v2 7/9] drm/rockchip: Force disable all crtc when unload

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Message-ID: <58E4C602.4090302@rock-chips.com>
Date:   Wed, 05 Apr 2017 18:25:06 +0800
From:   jeffy <jeffy.chen@...k-chips.com>
To:     Daniel Vetter <daniel@...ll.ch>
CC:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Brian Norris <briannorris@...omium.org>,
        Douglas Anderson <dianders@...omium.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        Tomasz Figa <tfiga@...omium.org>,
        "open list:ARM/Rockchip SoC..." <linux-rockchip@...ts.infradead.org>,
        Chris Zhong <zyw@...k-chips.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v2 7/9] drm/rockchip: Force disable all crtc when unload

Hi Daniel,

On 04/03/2017 03:58 PM, Daniel Vetter wrote:
> On Sat, Apr 1, 2017 at 1:35 PM, Jeffy Chen <jeffy.chen@...k-chips.com> wrote:
>> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
>> index a5d83cb..5dbf011 100644
>> --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
>> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
>> @@ -246,6 +246,7 @@ static void rockchip_drm_unbind(struct device *dev)
>>          rockchip_drm_fbdev_fini(drm_dev);
>>          drm_kms_helper_poll_fini(drm_dev);
>>
>> +       drm_crtc_force_disable_all(drm_dev);
>
> This will result in a WARN_ON in latest drm-next because rockchip is
> atomic, and this helper is for legacy kms drivers. You want to use
> drm_atomic_helper_shutdown here.
> -Daniel
>
oops, thanx for the notice.