[Freedreno] [PATCH v2] drm/msm/dp: fix connect/disconnect handled at irq_hpd

[Stephen Boyd]

Quoting Kuogee Hsieh (2020-11-17 10:40:15)
> Some usb type-c dongle use irq_hpd request to perform device connection
> and disconnection. This patch add handling of both connection and
> disconnection are based on the state of hpd_state and sink_count.
> 
> Changes in V2:
> -- add dp_display_handle_port_ststus_changed()
> -- fix kernel test robot complaint
> 
> Reported-by: kernel test robot <lkp at intel.com>
> Fixes: 26b8d66a399e ("drm/msm/dp: promote irq_hpd handle to handle link training correctly")
> Signed-off-by: Kuogee Hsieh <khsieh at codeaurora.org>
> ---

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