[Bug 208839] AMDGPU: DPM is not enabled after hibernate and resume for CIK/Hawaii GPUs (e.g R9 390)

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https://bugzilla.kernel.org/show_bug.cgi?id=208839

--- Comment #7 from Alex Deucher (alexdeucher@xxxxxxxxx) ---
It has nothing to do with kernels that are installed.  From the link:

"Although in principle the image might be loaded into memory and the
pre-hibernation memory contents restored by the boot loader, in practice this
can’t be done because boot loaders aren’t smart enough and there is no
established protocol for passing the necessary information. So instead, the
boot loader loads a fresh instance of the kernel, called “the restore kernel”,
into memory and passes control to it in the usual way. Then the restore kernel
reads the system image, restores the pre-hibernation memory contents, and
passes control to the image kernel. Thus two different kernel instances are
involved in resuming from hibernation. In fact, the restore kernel may be
completely different from the image kernel: a different configuration and even
a different version."

Anyway, your patch looks correct.

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