On Fri, Nov 27, 2020 at 05:56:24PM +0000, Christoph Niedermaier wrote:
From: Greg KH [mailto:gregkh@linuxfoundation.org] Sent: Friday, November 27, 2020 3:09 PM
Hello Greg,
Is it possible to apply the following commit on the branch linux-4.19.y? de9f8eea5a44 ("drm/atomic_helper: Stop modesets on unregistered connectors harder")
This commit is applied to the other LTS kernels, but is missing on linux-4.19.y.
I see it showing up in the 4.20 release, so of course anything newer than that will work, what other trees do you see this applied in?
I think it's only the 4.19 tree that misses this patch, because it fixes "drm/atomic_helper: Disallow new modesets on unregistered connectors" and "drm/atomic_helper: Allow DPMS On<->Off changes for unregistered connectors" If I am right this two commits aren't on 4.14 / 4.9 / 4.4
Without this patch my i.MX6ULL SoM doesn't initialize the display correctly after booting.
It does not apply cleanly to the 4.19.y tree, can you provide a working backport so that we could apply it?
A working backport is below.
Looks good, now queued up, thanks.
greg k-h