Re: [PATCH v3 0/2] Stabilize use of vblank_refcount

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On 11/30/2023 11:41 PM, Dmitry Baryshkov wrote:
On Fri, 1 Dec 2023 at 03:41, Paloma Arellano <quic_parellan@xxxxxxxxxxx> wrote:
There is currently a race condition occuring when accessing
vblank_refcount. Therefore, vblank irq timeouts may occur.

Avoid any vblank irq timeouts by stablizing the use of vblank_refcount.

Changes from prior versions:
    v2: - Slightly changed wording of patch #2 commit message
    v3: - Mistakenly did not change wording of patch #2 in last version.
          It is done now.
Usually sending a series once a day is enough. If you have any pending
changes, it might be better to reply to your patch stating that you
want to do this and that, while still allowing reviewers to respond
(and thus you can incorporate their review in the next iteration).

Ack. Good to know.

Thank you,


Paloma Arellano (2):
   drm/msm/dpu: Modify vblank_refcount if error in callback
   drm/msm/dpu: Add mutex lock in control vblank irq

  drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c          |  6 ++++++
  drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h     |  6 ++++++
  drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c | 11 +++++++++--
  drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c | 11 +++++++++--
  4 files changed, 30 insertions(+), 4 deletions(-)


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