Comment # 3 on bug 109375 from Rafał Miłecki

It didn't apply cleanly on top of 5.0.0-rc2 (a trivial conflict in the
dc_link.c.rej). After fixing that, compiling & testing I can confirm is solves
the problem for me! Thanks!

Before suspend:
> cat /sys/class/backlight/amdgpu_bl0/{actual_brightness,brightness}
65535
255

After resume:
> cat /sys/class/backlight/amdgpu_bl0/{actual_brightness,brightness}
64000
255

As it fixes a regression, can you submit it as a fix for the 5.0 release cycle,
please?