Re: [PATCH] drm: Use atomic state for FB in legacy ioctls

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Hi,

> On 13 Dec 2016, at 6:48 pm, Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> wrote:
> 
>> On Tue, Dec 13, 2016 at 06:19:12PM +0000, Daniel Stone wrote:
>> @@ -357,7 +357,10 @@ int drm_mode_getcrtc(struct drm_device *dev,
>> 
>>    drm_modeset_lock_crtc(crtc, crtc->primary);
>>    crtc_resp->gamma_size = crtc->gamma_size;
>> -    if (crtc->primary->fb)
>> +
>> +    if (crtc->primary->state && crtc->primary->state->fb)
>> +        crtc_resp->fb_id = crtc->primary->state->fb->base.id;
>> +    else if (!crtc->primary->state && crtc->primary->fb)
>>        crtc_resp->fb_id = crtc->primary->fb->base.id;
> 
> I think what we do elsewhere is totally ignore the legacy junk if the
> ->state pointer exists.

Indeed, hence the negative state check on the second branch; having nested if statements instead seemed unnecessarily unwieldy, but the effect is the same.

[Obligatory mobile formatting apology.]

Cheers,
Daniel
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