drm/dp_mst: Revise broadcast msg lct & lcr

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commit 419e91ea31 upstream.

[Why & How]
According to DP spec, broadcast message LCT equals to 1 and LCR equals
to 6. Current implementation is incorrect. Fix it.
In addition, revise a bit the hdr->rad handling to include broadcast
case.

Signed-off-by: Wayne Lin <Wayne.Lin@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210224101521.6713-2-Wayne.Lin@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Wayne Lin 2021-02-24 18:15:20 +08:00 • committed by Greg Kroah-Hartman

parent 9b50c185d2

commit 7eea3eff02

1 changed files with 9 additions and 4 deletions

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drivers/gpu/drm/drm_dp_mst_topology.c

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