https://bugs.freedesktop.org/show_bug.cgi?id=90704
--- Comment #5 from Jani Nikula jani.nikula@intel.com --- Moreover, in this case we don't even know what the bug is, whether it's specifically in our driver or somewhere else, or how involved or invasive the backport would be. Later -rc development versions and stable kernels have pretty strict rules about what can be backported.