From nobody Sat Feb 7 22:54:57 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 EEF10137759; Wed, 27 Mar 2024 12:08:15 +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=1711541296; cv=none; b=nrsXRhNnC9qFuAerbuBIuB8j0UlmeAciGbjHqN9QdJUKBOWiZ9Tq+bRJ+GEtcZ/KYBuSB4DnpJPStQj9+QkbOkTjj74CqCb1fS0gvDdocfvU+mOqZ91nETvdG9aIE3+QKVVyBH0BqqGWl5OJKFB9QlczXbxuZWovt0/dXG93U+I= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711541296; c=relaxed/simple; bh=qPO9mbpce+BNGpnGhjrqZJHlmZ2LNJpqP9j1dM+AKJ0=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=VWxWDnxzwjR0Qnq9m1iegAmkpYy9cbPpqIzkRDSLTHojZfLHfMz+66HvKXiy4bPipAzFxcOyNWmUnldPXh1otjpvlH9RGH32uPPWwEzLqDpsB9ekxiRJ6b82DNYjnMgXw6S4v3O1p2zsGD7f8jHZDtzm8QB7m/jR8n8gKVwxrD4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=HorGSGkg; 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="HorGSGkg" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6C58AC433F1; Wed, 27 Mar 2024 12:08:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711541295; bh=qPO9mbpce+BNGpnGhjrqZJHlmZ2LNJpqP9j1dM+AKJ0=; h=From:To:Cc:Subject:Date:From; b=HorGSGkgsfvE/QcthLbXaCLXeNe+uGFWfRrEUPHSEFFRO+gO0/hOeDost5D14DDVy iTNrgRa4JMHSKuVH/P5Ifb0AOXc6xUX6+Fl69lo8fMxcSs7PpjWvUkpnMllQTaFOZp c1NyKt4Ajnqa+MukAduMRY38tZwW50mhpnvSMJ3yAtoSePRIEnJDuOTogTjoqLlti4 lKKYe01+XwGfZznY5O1lD/RBL8WP5oJ5sU/5hBjot/nFeSUSs4Uo4qyOfw24gagAEG gIARag5h1iJEw7YwLpp0cPPloPzhP4U4eykYic8QHU1xNM6Lg+4z45SQ9l1KHydi82 blOERHciy9hOA== From: Sasha Levin To: stable@vger.kernel.org, zhikai.zhai@amd.com Cc: Mario Limonciello , Alex Deucher , Wenjing Liu , Aurabindo Pillai , Daniel Wheeler , amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: FAILED: Patch "drm/amd/display: Add align done check" failed to apply to 6.8-stable tree Date: Wed, 27 Mar 2024 08:08:13 -0400 Message-ID: <20240327120813.2826028-1-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 6.8-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: Aurabindo Pillai Reviewed-by: Wenjing Liu Tested-by: Daniel Wheeler ------------------ original commit in Linus's tree ------------------ From 1b5078f01b953a43d6198180ca5b110017315672 Mon Sep 17 00:00:00 2001 From: Zhikai Zhai Date: Mon, 29 Jan 2024 17:02:18 +0800 Subject: [PATCH] drm/amd/display: Add align done check [WHY] We Double-check link status if training successful, but miss the lane align status. [HOW] Add the lane align status check Cc: Mario Limonciello Cc: Alex Deucher Cc: stable@vger.kernel.org Reviewed-by: Wenjing Liu Acked-by: Aurabindo Pillai Signed-off-by: Zhikai Zhai Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- .../gpu/drm/amd/display/dc/link/protocols/link_dp_training.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training= .c b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c index e06d3c2d89102..e538c67d3ed91 100644 --- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c +++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c @@ -517,6 +517,7 @@ enum link_training_result dp_check_link_loss_status( { enum link_training_result status =3D LINK_TRAINING_SUCCESS; union lane_status lane_status; + union lane_align_status_updated dpcd_lane_status_updated; uint8_t dpcd_buf[6] =3D {0}; uint32_t lane; =20 @@ -532,10 +533,12 @@ enum link_training_result dp_check_link_loss_status( * check lanes status */ lane_status.raw =3D dp_get_nibble_at_index(&dpcd_buf[2], lane); + dpcd_lane_status_updated.raw =3D dpcd_buf[4]; =20 if (!lane_status.bits.CHANNEL_EQ_DONE_0 || !lane_status.bits.CR_DONE_0 || - !lane_status.bits.SYMBOL_LOCKED_0) { + !lane_status.bits.SYMBOL_LOCKED_0 || + !dp_is_interlane_aligned(dpcd_lane_status_updated)) { /* if one of the channel equalization, clock * recovery or symbol lock is dropped * consider it as (link has been --=20 2.43.0