[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 #18 from spasswolf@web.de ---
The problem seems to be that rn_update_clocks tries to call
rn_vbios_smu_set_dcn_low power before adev->in_s0ix is set to 1 in
amdpgu_pmops_suspend:

Changes to rn_update_clocks:
dev_info(adev->dev, "adev->in_s0ix = %d\n", adev->in_s0ix);
//if (display_count == 0 && (adev->in_s0ix || !hpd_state)) {
if (display_count == 0) {
        dev_info(adev->dev, "calling rn_vbios_smu_set_dcn_low_power\n");
        rn_vbios_smu_set_dcn_low_power_state(clk_mgr, DCN_PWR_STATE_LOW_POWER);
Changes to amdgpu_pmops_suspend:
if (amdgpu_acpi_is_s0ix_active(adev))
        adev->in_s0ix = true;
dev_info(adev->dev, "amdgpu_pmops_suspend: adev->in_s0ix = %d\n",
adev->in_s0ix);


[   36.010259] wlp4s0: deauthenticating from 54:67:51:3d:a2:e0 by local choice
(Reason: 3=DEAUTH_LEAVING)
[   36.043902] amdgpu 0000:08:00.0: amdgpu: adev->in_s0ix = 0
[   36.043904] amdgpu 0000:08:00.0: amdgpu: calling
rn_vbios_smu_set_dcn_low_power
[   40.015570] PM: suspend entry (s2idle)
[   40.239013] Filesystems sync: 0.223 seconds
[   40.239912] Freezing user space processes ... (elapsed 0.002 seconds) done.
[   40.242407] OOM killer disabled.
[   40.242407] Freezing remaining freezable tasks ... (elapsed 0.001 seconds)
done.
[   40.243513] printk: Suspending console(s) (use no_console_suspend to debug)
[   40.246850] amdgpu 0000:08:00.0: amdgpu: amdgpu_pmops_suspend: adev->in_s0ix
= 1
[   40.266376] queueing ieee80211 work while going to suspend

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