Subject: FAILED: patch "[PATCH] drm/amd/display: Set native cursor mode for disabled CRTCs" failed to apply to 7.1-stable tree
To: timur.kristof@gmail.com,alexander.deucher@amd.com,michel.daenzer@mailbox.org,sunpeng.li@amd.com,viktor_jaegerskuepper@freenet.de
Cc: <stable@vger.kernel.org>
From: <gregkh@linuxfoundation.org>
Date: Wed, 29 Jul 2026 14:48:17 +0200
Message-ID: <2026072917-requisite-outer-9b7b@gregkh>
Precedence: bulk
MIME-Version: 1.0
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The patch below does not apply to the 7.1-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-7.1.y
git checkout FETCH_HEAD
git cherry-pick -x cea54c52d82dd9948126b7518af51ca1de094933
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2026072917-requisite-outer-9b7b@gregkh' --subject-prefix 'PATCH 7.1.y' 'HEAD^..'

Possible dependencies:


thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From cea54c52d82dd9948126b7518af51ca1de094933 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Timur=20Krist=C3=B3f?= <timur.kristof@gmail.com>
Date: Sat, 11 Jul 2026 13:34:35 +0200
Subject: [PATCH] drm/amd/display: Set native cursor mode for disabled CRTCs
MIME-Version: 1.0
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Content-Transfer-Encoding: 8bit

Always set native cursor mode when the CRTC is disabled,
to make sure it doesn't cause atomic commits to fail when
they are trying to disable the CRTC.

Fixes: 41af6215cdbc ("drm/amd/display: Reject cursor plane on DCE when scaled differently than primary")
Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/5432
Cc: Leo Li <sunpeng.li@amd.com>
Cc: Michel Dänzer <michel.daenzer@mailbox.org>
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Tested-by: Viktor Jägersküpper <viktor_jaegerskuepper@freenet.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 2f79f0130f828cf26fe2dcf45291821616af7b47)
Cc: stable@vger.kernel.org

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index ff337de44f7a..fe6eea28d119 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -12814,10 +12814,15 @@ static int dm_crtc_get_cursor_mode(struct amdgpu_device *adev,
 	/* Overlay cursor not supported on HW before DCN
 	 * DCN401/420 does not have the cursor-on-scaled-plane or cursor-on-yuv-plane restrictions
 	 * as previous DCN generations, so enable native mode on DCN401/420
+	 *
+	 * Always set native cursor mode when the CRTC is disabled,
+	 * to make sure it doesn't cause atomic commits to fail when
+	 * they are trying to disable the CRTC.
 	 */
 	if (amdgpu_ip_version(adev, DCE_HWIP, 0) == IP_VERSION(4, 0, 1) ||
 	    amdgpu_ip_version(adev, DCE_HWIP, 0) == IP_VERSION(4, 2, 0) ||
-	    amdgpu_ip_version(adev, DCE_HWIP, 0) == IP_VERSION(4, 2, 1)) {
+	    amdgpu_ip_version(adev, DCE_HWIP, 0) == IP_VERSION(4, 2, 1) ||
+	    !dm_crtc_state->base.enable) {
 		*cursor_mode = DM_CURSOR_NATIVE_MODE;
 		return 0;
 	}