[Bug 215436] admgpu: suspend and resuming from suspend don't work

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=215436

--- Comment #26 from spasswolf@web.de ---
For the extra call hpd_state = 0:
[   30.684201] wlp4s0: deauthenticating from 54:67:51:3d:a2:e0 by local choice
(Reason: 3=DEAUTH_LEAVING)
[   30.794571] amdgpu 0000:08:00.0: amdgpu: Calling optimize_bandwidth from
dc_commit_state_no_check
[   30.794609] amdgpu 0000:08:00.0: amdgpu: Calling update_clocks from
dcn20_optimize_bandwidth
[   30.794613] amdgpu 0000:08:00.0: amdgpu: adev->in_s0ix = 0, hpd_state = 1
[   35.026604] PM: suspend entry (s2idle)
[   35.256153] Filesystems sync: 0.229 seconds
[   35.257044] Freezing user space processes ... (elapsed 0.002 seconds) done.
[   35.259636] OOM killer disabled.
[   35.259636] Freezing remaining freezable tasks ... (elapsed 0.001 seconds)
done.
[   35.260642] printk: Suspending console(s) (use no_console_suspend to debug)
[   35.264212] amdgpu 0000:08:00.0: amdgpu: amdgpu_pmops_suspend: adev->in_s0ix
= 1
[   35.264369] amdgpu 0000:08:00.0: amdgpu: calling update_clocks from
dcn21_optimize_pwr_state
[   35.264379] amdgpu 0000:08:00.0: amdgpu: adev->in_s0ix = 1, hpd_state = 0
[   35.264381] amdgpu 0000:08:00.0: amdgpu: calling
rn_vbios_smu_set_dcn_low_power

So one could go back to the old version of rn_update_clocks with               
if (display_count == 0 && !hpd_state) {

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