[Freedreno] [PATCH v3 1/2] drm/msm/dpu: Modify vblank_refcount if error in callback

[Dmitry Baryshkov]

On Fri, 1 Dec 2023 at 03:41, Paloma Arellano <quic_parellan at quicinc.com> wrote:
>
> When the irq callback returns a value other than zero,
> modify vblank_refcount by performing the inverse
> operation of its corresponding if-else condition.

I think it might be better to follow Bjorn's suggestion: once we have
the lock, we don't need atomics at all.
Then you rearrange the code to set the new value after getting return
code from dpu_core_irq_register_callback() /
dpu_core_irq_unregister_callback().

>
> Signed-off-by: Paloma Arellano <quic_parellan at quicinc.com>
> ---
>  drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c | 9 +++++++--
>  drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c | 9 +++++++--
>  2 files changed, 14 insertions(+), 4 deletions(-)

-- 
With best wishes
Dmitry