NACK/Cmnt: [PATCH 0/1][SRU][Q] xe: [drm] *ERROR* Unexpected child device config size 44 (expected 40 for VBT version 266)

[Sarah Emery]

On 21/10/2025 08:48, AceLan Kao wrote:
> From: "Chia-Lin Kao (AceLan)" <acelan.kao at canonical.com>
> 
> BugLink: https://bugs.launchpad.net/bugs/2129157
> 
> [Impact]
> Pantherlake device has VBT (Video BIOS Table) version 266, which reports a
> child device config size of 44 bytes. However, the kernel expected only 40
> bytes, causing the error:
>     ERROR Unexpected child device config size 44 (expected 40 for VBT version 266)
> 
> [Fix]
> This commit included in v6.18-rc1 fix the issue
> 4d33c77cf2c3 drm/i915/vbt: Add eDP Data rate overrride field in VBT
> 
> [Test]
> Boot up PTL system and check dmesg, there should be no the error message like
> xe: [drm] ERROR Unexpected child device config size 44 (expected 40 for VBT version 266)
> 
> [Where problems could occur]
> No, it adds the setting for the latest PTL device with link rate equal to 263.
> 
> Suraj Kandpal (1):
>    drm/i915/vbt: Add eDP Data rate overrride field in VBT
> 
>   drivers/gpu/drm/i915/display/intel_bios.c     |  4 +++-
>   drivers/gpu/drm/i915/display/intel_vbt_defs.h | 18 ++++++++++++++++++
>   2 files changed, 21 insertions(+), 1 deletion(-)
> 

The subject is not compliant to the one accepted, it should have been:
[SRU][Q][PATCH 0/1] xe: [drm] *ERROR* Unexpected child device config 
size 44 (expected 40 for VBT version 266)
It seems it has been the case already for multiple patches coming from 
you, please fix this :)

Also, the [Where problems could occur] section should be more detailed 
as now it doesn't describe any subsystem impacted or any potential problems.