On 3/28/2016 11:15 PM, Michel Dänzer wrote:
> On 29.03.2016 08:47, Julian Margetson wrote:
>> Seeing the following when booting kernel 4.6-rc1 on Acube Sam460ex Canyonlands board.
>> This loops for a few times then the kernel boots.
>> No problem with the 4.6-rc1 with an A-eon Tabor Freescale e500v2 board.
>>
>> Regards
>>
>> Julian
>>
>>
>>   [    2.197839] ------------[ cut here ]------------
>>   [    2.197850] WARNING: CPU: 0 PID: 1 at drivers/gpu/drm/drm_irq.c:1368 drm_vblank_off+0x2c/0x1e0
> That's
>
> 	if (WARN_ON(pipe >= dev->num_crtcs))
>
> My best guess is that drm_vblank_off is called before drm_vblank_init,
> so dev->num_crtcs is still 0.
>
>
> Please provide the full dmesg output corresponding to the problem.
>
>
Attached