commit 15512021eb3975a8c2366e3883337e252bb0eee5 causes white spots in console screens

[François Valenduc]

Commit 15512021eb3975a8c2366e3883337e252bb0eee5 
(15512021eb3975a8c2366e3883337e252bb0eee5) causes a lof of white spots 
to appears on the right upper corner of all console screens (see 
https://drive.google.com/file/d/13GabEvOIKSAj5yox6ybAZEDu3Ixncw5Q/view). 
git-bisect shows that this is the offending commit and if I revert it, 
the problem goes away. The problem still occurs with kernel 5.18-rc2 and 
to all stable trees where it was applied.
Can somebody explains what happens ?

The video card is the following: VGA compatible controller: Intel 
Corporation WhiskeyLake-U GT2 [UHD Graphics 620] (rev 02) (prog-if 00 
[VGA controller])

Please tell me if you need more info.

Thanks in advance,

François Valenduc