This is a note to let you know that I've just added the patch titled
drm/i915/dsi: fix VBT send packet port selection for dual link DSI
to the 6.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-i915-dsi-fix-vbt-send-packet-port-selection-for-dual-link-dsi.patch
and it can be found in the queue-6.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From f9cdf4130671d767071607d0a7568c9bd36a68d0 Mon Sep 17 00:00:00 2001
From: Mikko Kovanen <mikko.kovanen@xxxxxxxxxxxxxx>
Date: Sat, 26 Nov 2022 13:27:13 +0000
Subject: drm/i915/dsi: fix VBT send packet port selection for dual link DSI
From: Mikko Kovanen <mikko.kovanen@xxxxxxxxxxxxxx>
commit f9cdf4130671d767071607d0a7568c9bd36a68d0 upstream.
intel_dsi->ports contains bitmask of enabled ports and correspondingly
logic for selecting port for VBT packet sending must use port specific
bitmask when deciding appropriate port.
Fixes: 08c59dde71b7 ("drm/i915/dsi: fix VBT send packet port selection for ICL+")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Mikko Kovanen <mikko.kovanen@xxxxxxxxxxxxxx>
Reviewed-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/DBBPR09MB466592B16885D99ABBF2393A91119@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
(cherry picked from commit 8d58bb7991c45f6b60710cc04c9498c6ea96db90)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_dsi_vbt.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/i915/display/intel_dsi_vbt.c
+++ b/drivers/gpu/drm/i915/display/intel_dsi_vbt.c
@@ -137,9 +137,9 @@ static enum port intel_dsi_seq_port_to_p
return ffs(intel_dsi->ports) - 1;
if (seq_port) {
- if (intel_dsi->ports & PORT_B)
+ if (intel_dsi->ports & BIT(PORT_B))
return PORT_B;
- else if (intel_dsi->ports & PORT_C)
+ else if (intel_dsi->ports & BIT(PORT_C))
return PORT_C;
}
Patches currently in stable-queue which might be from mikko.kovanen@xxxxxxxxxxxxxx are
queue-6.0/drm-i915-dsi-fix-vbt-send-packet-port-selection-for-dual-link-dsi.patch
