Re: [PATCH 2/2] drm/i915: Skip object locking around a no-op set-domain ioctl

[Serge Belyshev]

Hi!

This patch causes lockups in firefox. They appear like non-fatal hangs
of the webpage contents, "fixable" with alt-tab or a background system
load.  I have verified that reverting the commit 754a254427 on top of
current Linus tree fixes the problem.