[PATCH 0/1][SRU][F/OEM-5.6]drm/i915/dp_mst - System would hang during the boot up

[Stefan Bader]

On 02.11.20 06:46, Koba Ko wrote:
> BugLink: https://bugs.launchpad.net/bugs/1902469
> 
> [Impact]
> The machine connect with the external monitor on dock(Thunderbolt),
> Then system would hang during the boot-up.
> 
> [Fix]
> The atomic check hooks must look up the encoder to be used with a
> connector from the connector's atomic state, and not assume that it's
> the connector's current attached encoder. The latter one can change
> under the atomic check func, or can be unset yet as in the case of MST
> connectors.
> 
> [test]
> With the patch, The machine connect with the external monitor on dock(Thunderbolt),
> Then system boot up successfully.
> 
> [Regression Potential]
> Low. This patch is also verified by others and is archived in the drmtip.
> 
> Imre Deak (1):
>   drm/i915: Fix encoder lookup during PSR atomic check
> 
>  drivers/gpu/drm/i915/display/intel_psr.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
Is this focal/oem-5.6 only? The bug report points at focal/linux.

-Stefan

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