From nobody Sun Feb 8 06:54:05 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 7EB1517EB89; Wed, 27 Mar 2024 12:24:52 +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=1711542292; cv=none; b=VLu+OBbeMU6N4qOOqsL75q1MpNb+5HCl4W4IYQdetxU2gS+0GQMQxr4q3j6aPuX7KoD7wzPZ6f5jZA/wmMbYvkO7l2yGmyItMF4a89elE86OE/hJJ5oUmhT5nEfZqKrFAcwlk7m9l0oaAHxsiypVJp9WOATx3LDXO72XvUGb6iA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711542292; c=relaxed/simple; bh=+Y1RzOaKe85t4i83uukvnH77D4CLGHFg9O5hUF9UOa8=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=ZqWzp+qUtCu0FHS58q0rEyF4K3qsgbwJ1zNTmpJQw9NdA7IsuvB7Y+8BTyXi746LjNt+fj/O/642ucf4sxDBmc0yNHlI3M5fWaLOqmB17nc3+CGNTO1ZFEwqQ5v9hDZ8tfydDpFxihSgQrEXY3dASVxgPgsLbhy5Aw4SnFTBIrY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ozYS4Thf; 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="ozYS4Thf" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 66E4BC43390; Wed, 27 Mar 2024 12:24:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711542292; bh=+Y1RzOaKe85t4i83uukvnH77D4CLGHFg9O5hUF9UOa8=; h=From:To:Cc:Subject:Date:From; b=ozYS4Thf3X2JK2rhL+ZkBggDMpYd/527DNsYvtcG8yEXkThBk6FPIPLFsmEBTIrHh yaqg9VFVJzdUelN8U0WV5nAX9a6aYsMlPLDmC24t29ofFJWPMzd979M4WUUFhMkGOU 8S22D0yTkZdPoPwZh+Y8+BBPecOhdsq9YhYZaaizkidqhu1Tas5maJWOqarUrNQBF4 DTGdji9MvyID02wjkq89VjcVnqbp36JhuafLYnvRHGiHg4JbdKHcRIlfjc/XtM2mkg FAiVzFt/Gg12EbRbLvHrbQdUlchaW6LKPWToq3Gqt+pjnGFe7vkvTAjaY5Ib7dZhfN FH4TiutDmAFeA== 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 5.4-stable tree Date: Wed, 27 Mar 2024 08:24:50 -0400 Message-ID: <20240327122450.2839728-1-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 5.4-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