Re: [PATCH 7.1.y] drm/amd/display: check GRPH_FLIP status before sending event

[Leo Li <sunpeng.li@amd.com>]

On 2026-07-29 22:40, Sasha Levin wrote:
>> [PATCH 7.1.y] drm/amd/display: check GRPH_FLIP status before sending event
> 
> Thanks for the backports, but I'm going to hold both of these for now.
> 
> There are two unmerged Fixes: patches against 48ab86360af1 ("drm/amd/display:
> check GRPH_FLIP status before sending event") on the list, and I can
> reproduce a flip_done/login freeze on DCN 3.1.5 with 7.2-rc4, plus there is
> your own Cc: stable follow-up on top.
> 
> Could you confirm which set you want stable to carry before I queue any of
> it?  Once the follow-ups land in mainline I'm happy to take the whole thing
> together for 7.1 and 6.18.
> 

Hi Sasha,

There are a few more fixes that merged into 7.2-rc5, with one that is still in flight to mainline.
Here's the --oneline list of everything:

In flight to mainline (SHA will change):
    18e3dd9ef45c6 drm/amd/display: Exit idle optimizations before programming

In 7.2-rc5 mainline:
    fbbaca9e20873 drm/amd/display: Fix missing DCE check in dm_gpureset_toggle_interrupts()
    82730dba0cf9d drm/amd/display: Fix flip-done timeouts on mode1 reset

In 7.2-rc4:
    f39283eab44fb Revert "drm/amd/display: Restore 5s vbl offdelay for NV3x+ DGPUs"
    48ab86360af11 drm/amd/display: check GRPH_FLIP status before sending event
    8382cd234981a drm/amd/display: consolidate DCN vblank/flip handling onto vupdate_no_lock

Note that the revert target for f39283eab44fb is not in 6.18 but is in 7.1.

The flip_done/login freeze that you're experiencing is likely fixed by the in-flight fix.
Link to 7.2-rc5 rebased change: https://gitlab.freedesktop.org/leoli/linux-asdn/-/commit/18e3dd9ef45c6d1813ca1b629e294b151d38149a

Thanks,
Leo