From mboxrd@z Thu Jan 1 00:00:00 1970 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 478E71482E8; Sun, 1 Mar 2026 01:21:59 +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=1772328119; cv=none; b=Dhc/bjxUpzPACc1intQA3VnjFX2GPd8JqhK9V0sSX/b7/h42SvLyP8/FpzreLbHjt5V97wPcULb+pyK0oSI2BHCpjLkao4rz7kml/ei32c7jqGyx0u748s8KaDLHDDbNcUPjFUJCn7hj5qMe5o7qksx9lQKjup1zvF+0Pv8CVrE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772328119; c=relaxed/simple; bh=c12qH1e5X3AIU/mGpLowYLIqMvIkOrEb6vdRAvnixBo=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=ciPC/ooi/4WyyuV6nBrM2j0RJPoL+8ORwlBbIl4X67fJQM+KQZgro5O9fovqmmC4R6cwdJ+MIrHB+u2HelmQbGwj40IkrOK7z9USKySNsF+faGDXqlPGh15OlGe4d3KDxBMhDmUUXAwbv/lRenRgNyi75HgwE5TVbfIRgkHcV28= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=aJc7sjHX; 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="aJc7sjHX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 95499C19421; Sun, 1 Mar 2026 01:21:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772328119; bh=c12qH1e5X3AIU/mGpLowYLIqMvIkOrEb6vdRAvnixBo=; h=From:To:Cc:Subject:Date:From; b=aJc7sjHXSPBEjcqXnNN9AScAiNaEEuDoo27YJLmVy/PeE7Yy6LPwVL9fCgls7fWP0 doqJgcyoh7scDeD3LvBOKZuja+AeZS/7sDOSKEJBH4CmB7JPaPmKib0RPkOU8NHvBn kO2XjdieJ1eTwf/kiAP8LzZG3a2qkaJEW8gHzhhUw9qJ2DumUAzB4y7LA8M4duRc6i IifxKs5IkKpMrfzttnVn5t9ycny6FJFoQ8yatbTUWs1xPXRHzkEN18UPhBA4+1RbYx JrxHtSWiqo4ugRzMAViRqAdxPR5HE78Co7ZcgVSfhF9SZm5GKtTOLctVnLb0LfoKGV ii4JZT36aOv7Q== From: Sasha Levin To: stable@vger.kernel.org, johan@kernel.org Cc: Thierry Reding , dri-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org Subject: FAILED: Patch "drm/tegra: dsi: fix device leak on probe" failed to apply to 6.12-stable tree Date: Sat, 28 Feb 2026 20:21:57 -0500 Message-ID: <20260301012157.1678062-1-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Hint: ignore X-stable: review Content-Transfer-Encoding: 8bit The patch below does not apply to the 6.12-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 ------------------ original commit in Linus's tree ------------------ >From bfef062695570842cf96358f2f46f4c6642c6689 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Fri, 21 Nov 2025 17:42:01 +0100 Subject: [PATCH] drm/tegra: dsi: fix device leak on probe Make sure to drop the reference taken when looking up the companion (ganged) device and its driver data during probe(). Note that holding a reference to a device does not prevent its driver data from going away so there is no point in keeping the reference. Fixes: e94236cde4d5 ("drm/tegra: dsi: Add ganged mode support") Fixes: 221e3638feb8 ("drm/tegra: Fix reference leak in tegra_dsi_ganged_probe") Cc: stable@vger.kernel.org # 3.19: 221e3638feb8 Cc: Thierry Reding Signed-off-by: Johan Hovold Signed-off-by: Thierry Reding Link: https://patch.msgid.link/20251121164201.13188-1-johan@kernel.org --- drivers/gpu/drm/tegra/dsi.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c index 175f5f9937b01..8ee96b59fdbc8 100644 --- a/drivers/gpu/drm/tegra/dsi.c +++ b/drivers/gpu/drm/tegra/dsi.c @@ -1542,11 +1542,9 @@ static int tegra_dsi_ganged_probe(struct tegra_dsi *dsi) return -EPROBE_DEFER; dsi->slave = platform_get_drvdata(gangster); - - if (!dsi->slave) { - put_device(&gangster->dev); + put_device(&gangster->dev); + if (!dsi->slave) return -EPROBE_DEFER; - } dsi->slave->master = dsi; } -- 2.51.0