This is a note to let you know that I've just added the patch titled
Revert "drm/dp: Change AUX DPCD probe address from DPCD_REV to
LANE0_1_STATUS"
to the 6.16-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:
revert-drm-dp-change-aux-dpcd-probe-address-from-dpcd_rev-to-lane0_1_status.patch
and it can be found in the queue-6.16 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <sta...@vger.kernel.org> know about it.
>From imre.d...@intel.com Tue Sep 2 13:50:59 2025
From: Imre Deak <imre.d...@intel.com>
Date: Thu, 28 Aug 2025 20:49:29 +0300
Subject: Revert "drm/dp: Change AUX DPCD probe address from DPCD_REV to
LANE0_1_STATUS"
To: <sta...@vger.kernel.org>
Cc: <intel-...@lists.freedesktop.org>, <dri-devel@lists.freedesktop.org>, Sasha
Levin <sas...@kernel.org>
From: Imre Deak <imre.d...@intel.com>
This reverts commit 944e732be9c3a33e64e9fb0f5451a37fc252ddfc which is
commit a40c5d727b8111b5db424a1e43e14a1dcce1e77f upstream.
The upstream commit a40c5d727b8111b5db424a1e43e14a1dcce1e77f ("drm/dp:
Change AUX DPCD probe address from DPCD_REV to LANE0_1_STATUS") the
reverted commit backported causes a regression, on one eDP panel at
least resulting in display flickering, described in detail at the Link:
below. The issue fixed by the upstream commit will need a different
solution, revert the backport for now.
Cc: intel-...@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Cc: Sasha Levin <sas...@kernel.org>
Link: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/14558
Signed-off-by: Imre Deak <imre.d...@intel.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/gpu/drm/display/drm_dp_helper.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/display/drm_dp_helper.c
+++ b/drivers/gpu/drm/display/drm_dp_helper.c
@@ -725,7 +725,7 @@ ssize_t drm_dp_dpcd_read(struct drm_dp_a
* monitor doesn't power down exactly after the throw away read.
*/
if (!aux->is_remote) {
- ret = drm_dp_dpcd_probe(aux, DP_LANE0_1_STATUS);
+ ret = drm_dp_dpcd_probe(aux, DP_DPCD_REV);
if (ret < 0)
return ret;
}
Patches currently in stable-queue which might be from imre.d...@intel.com are
queue-6.16/revert-drm-dp-change-aux-dpcd-probe-address-from-dpcd_rev-to-lane0_1_status.patch
