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-----Original Message----- From: Guenter Roeck groeck7@gmail.com On Behalf Of Guenter Roeck Sent: Friday, January 20, 2023 12:18 To: Limonciello, Mario Mario.Limonciello@amd.com Cc: Lin, Wayne Wayne.Lin@amd.com; dri-devel@lists.freedesktop.org; amd-gfx@lists.freedesktop.org; stable@vger.kernel.org; stanislav.lisovskiy@intel.com; Zuo, Jerry Jerry.Zuo@amd.com; bskeggs@redhat.com Subject: Re: [PATCH] Revert "drm/display/dp_mst: Move all payload info into the atomic state"
Hi Mario,
On Fri, Jan 20, 2023 at 11:51:04AM -0600, Limonciello, Mario wrote:
On 1/20/2023 11:46, Guenter Roeck wrote:
On Thu, Jan 12, 2023 at 04:50:44PM +0800, Wayne Lin wrote:
This reverts commit 4d07b0bc403403438d9cf88450506240c5faf92f.
[Why] Changes cause regression on amdgpu mst. E.g. In fill_dc_mst_payload_table_from_drm(), amdgpu expects to
add/remove payload
one by one and call fill_dc_mst_payload_table_from_drm() to update
the HW
maintained payload table. But previous change tries to go through all
the
payloads in mst_state and update amdpug hw maintained table in once
everytime
driver only tries to add/remove a specific payload stream only. The
newly
design idea conflicts with the implementation in amdgpu nowadays.
[How] Revert this patch first. After addressing all regression problems caused
by
this previous patch, will add it back and adjust it.
Has there been any progress on this revert, or on fixing the underlying problem ?
Thanks, Guenter
Hi Guenter,
Wayne is OOO for CNY, but let me update you.
Harry has sent out this series which is a collection of proper fixes. https://patchwork.freedesktop.org/series/113125/
Once that's reviewed and accepted, 4 of them are applicable for 6.1.
Thanks a lot for the update. There is talk about abandoning v6.1.y as LTS candidate, in large part due to this problem, so it would be great to get the problem fixed before that happens.
Any idea how soon that decision is happening? It seems that we have line of sight to a solution including back to 6.1.y pending that review. So perhaps we can put off the decision until those are landed.