From nobody Sun Feb 8 06:54:10 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9D3B11BB066; Wed, 27 Mar 2024 12:28:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711542530; cv=none; b=D1L7AwqK9m06azqd9E86dA7Q78a/67aFsOitF7n5+t9ovDTZsE+dwJefENxwD+C7J8OtRoL0w8xkvBzhTbkw7Y5bbpmHLwcvAbft/8ylsiQbzhCrZeOpK40hCJcp+BVx3oKcGbw/dYgtflL3JUL0gmgXwYlA4X35KQB+Upw16rQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711542530; c=relaxed/simple; bh=GKnDNnS4DmpxxaSXiDyxHR3YKPspPG25hkQy2T/vBPA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=STgwHxbb+azG19eJRBkNg5PDs4JC7kU/IOp/OBue2ZEtqtV4hKjApaThrNcg38VhoLTRDuOFMWtQnimc2h4zBYqsqUlIfOaWLS277ISHBXOWQ4/ovMg1mpAELJyzZQgUrslwtGBgkTv0484o0moelspr5HnKQqa3OsSKrq//v80= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=s07z12DL; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="s07z12DL" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6AEA7C433C7; Wed, 27 Mar 2024 12:28:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711542530; bh=GKnDNnS4DmpxxaSXiDyxHR3YKPspPG25hkQy2T/vBPA=; h=From:To:Cc:Subject:Date:From; b=s07z12DLnPlqSZy0dcx55sGmYHyjw3jFEMq1l30mFNYL//WYWUqu0XOU/iHb0M8sN WnkmjGdsehrKStpGWXzql/qb8Ap6c2rhp3vWKMGhc8in63mU9M6rssQVeWIi0TVfkf 640sLc/CxZDvHpwrUbdIO8Unt2TQWbR84sNhPyeOR0T4A4Xt7dMyItvcE3dNkuNJgH w+dtR9t/rTLKh4QbVdcSbie9bOirImatPq9NSdOLfh1NgrKd2qGrGkbKfJDAz+cSS9 KTQqzW2oEyyIbJTmECu0iP04/QNywVximQusCxTxasbRFXjs3S0JkkF07c4t7xL2wh U2ACrsMibRk6w== From: Sasha Levin To: stable@vger.kernel.org, Wayne.Lin@amd.com Cc: Mario Limonciello , Alex Deucher , Alex Hung , Daniel Wheeler , amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: FAILED: Patch "drm/amd/display: Align the returned error code with legacy DP" failed to apply to 4.19-stable tree Date: Wed, 27 Mar 2024 08:28:48 -0400 Message-ID: <20240327122848.2843053-1-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Hint: ignore X-stable: review Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The patch below does not apply to the 4.19-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 . Thanks, Sasha Acked-by: Alex Hung Tested-by: Daniel Wheeler ------------------ original commit in Linus's tree ------------------ From 3b84525544be4ca0481110263a6d73eb00741cf3 Mon Sep 17 00:00:00 2001 From: Wayne Lin Date: Tue, 2 Jan 2024 14:20:37 +0800 Subject: [PATCH] drm/amd/display: Align the returned error code with legacy= DP [Why] For usb4 connector, AUX transaction is handled by dmub utilizing a differnt code path comparing to legacy DP connector. If the usb4 DP connector is disconnected, AUX access will report EBUSY and cause igt@kms_dp_aux_dev fail. [How] Align the error code with the one reported by legacy DP as EIO. Cc: Mario Limonciello Cc: Alex Deucher Cc: stable@vger.kernel.org Acked-by: Alex Hung Signed-off-by: Wayne Lin Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/dr= ivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c index eaf8d9f482446..85b7f58a7f35a 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c @@ -979,6 +979,11 @@ int dm_helper_dmub_aux_transfer_sync( struct aux_payload *payload, enum aux_return_code_type *operation_result) { + if (!link->hpd_status) { + *operation_result =3D AUX_RET_ERROR_HPD_DISCON; + return -1; + } + return amdgpu_dm_process_dmub_aux_transfer_sync(ctx, link->link_index, pa= yload, operation_result); } --=20 2.43.0