mbox series

[0/2] Set CLEAR_PAYLOAD_ID_TABLE as broadcast request

Message ID 20210222040027.23505-1-Wayne.Lin@amd.com (mailing list archive)
Headers show
Series Set CLEAR_PAYLOAD_ID_TABLE as broadcast request | expand

Message

Wayne Lin Feb. 22, 2021, 4 a.m. UTC 
While testing MST hotplug events on daisy chain monitors, find out
that CLEAR_PAYLOAD_ID_TABLE is not broadcasted and payload id table
is not reset. Dig in deeper and find out two parts needed to be fixed.

1. Link_Count_Total & Link_Count_Remaining of Broadcast message are
incorrect. Should set lct=1 & lcr=6
2. CLEAR_PAYLOAD_ID_TABLE request message is not set as path broadcast
request message. Should fix this.

Wayne Lin (2):
  drm/dp_mst: Revise broadcast msg lct & lcr
  drm/dp_mst: Set CLEAR_PAYLOAD_ID_TABLE as broadcast

 drivers/gpu/drm/drm_dp_mst_topology.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

--
2.17.1

Comments

Lyude Paul Feb. 24, 2021, 6:06 p.m. UTC | #1 
ooh, nice catches! For the whole series this is:

Reviewed-by: Lyude Paul <lyude@redhat.com>

I will go ahead and push these to drm-misc-next

On Mon, 2021-02-22 at 12:00 +0800, Wayne Lin wrote:
> While testing MST hotplug events on daisy chain monitors, find out
> that CLEAR_PAYLOAD_ID_TABLE is not broadcasted and payload id table
> is not reset. Dig in deeper and find out two parts needed to be fixed.
> 
> 1. Link_Count_Total & Link_Count_Remaining of Broadcast message are
> incorrect. Should set lct=1 & lcr=6
> 2. CLEAR_PAYLOAD_ID_TABLE request message is not set as path broadcast
> request message. Should fix this.
> 
> Wayne Lin (2):
>   drm/dp_mst: Revise broadcast msg lct & lcr
>   drm/dp_mst: Set CLEAR_PAYLOAD_ID_TABLE as broadcast
> 
>  drivers/gpu/drm/drm_dp_mst_topology.c | 14 +++++++++++---
>  1 file changed, 11 insertions(+), 3 deletions(-)
> 
> --
> 2.17.1
>