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drm/amd/display: Fix new dmub notification enabling in DM

Mika Penttilä requested to merge mpenttil/centos-stream-9:bz2107633 into main

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2107633
Upstream Status: v5.19-rc8

commit 2d4bd81fea1ad6ebba543bd6da3ef5179d130e6a
Author: Stylon Wang stylon.wang@amd.com
AuthorDate: Thu Jul 7 16:23:29 2022 +0800
Commit: Alex Deucher alexander.deucher@amd.com
CommitDate: Fri Jul 15 10:04:59 2022 -0400

[Why]  
Changes from "Fix for dmub outbox notification enable" need to land  
in DM or DMUB outbox notification would be disabled.  

[How]  
Enable outbox notification only after interrupt are enabled and IRQ  
handlers registered. Any pending notification will be sent by DMUB  
once outbox notification is enabled.  

Fixes: ed7208706448 ("drm/amd/display: Fix for dmub outbox notification enable")  
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>  
Acked-by: Solomon Chiu <solomon.chiu@amd.com>  
Signed-off-by: Stylon Wang <stylon.wang@amd.com>  
Acked-by: Harry Wentland <harry.wentland@amd.com>  
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>  
Cc: stable@vger.kernel.org

Signed-off-by: Mika Penttilä mpenttil@redhat.com

Edited by Mika Penttilä

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