[BUG] hdlcd gets confused about base address

[Russell King - ARM Linux]

On Mon, Nov 21, 2016 at 12:56:53PM +0000, Liviu Dudau wrote:
> That is mostly due to the check in hdlcd_crtc_disable() which I should
> remove, I've added it because I was getting a ->disable() hook call
> before any ->enable() was called at startup time. I need to revisit
> this as I remember Daniel was commenting that this was not needed.

Removing that test results in:

[drm:drm_atomic_helper_commit_cleanup_done] *ERROR* [CRTC:24:crtc-0] flip_done timed out

and the kernel hanging, seemingly in an IRQs-off region.

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