[Freedreno] [PATCH v3] drm/msm/dp: fix event thread stuck in wait_event after kthread_stop()

[Stephen Boyd]

Quoting Kuogee Hsieh (2022-05-03 09:25:36)
> Event thread supposed to exit from its while loop after kthread_stop().
> However there may has possibility that event thread is pending in the
> middle of wait_event due to condition checking never become true.
> To make sure event thread exit its loop after kthread_stop(), this
> patch OR kthread_should_stop() into wait_event's condition checking
> so that event thread will exit its loop after kernal_stop().
>
> Changes in v2:
> --  correct spelling error at commit title
>
> Changes in v3:
> -- remove unnecessary parenthesis
> -- while(1) to replace while (!kthread_should_stop())
>
> Reported-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
> Fixes: 570d3e5d28db ("drm/msm/dp: stop event kernel thread when DP unbind")
> Signed-off-by: Kuogee Hsieh <quic_khsieh at quicinc.com>
> ---

Reviewed-by: Stephen Boyd <swboyd at chromium.org>