Re: [Powerpc] Sam460ex Canyonlands issue -Kernel 4.4.6-rc1

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.