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 6208E3F6AEF; Sat, 28 Feb 2026 17:42:43 +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=1772300563; cv=none; b=dIL3INJY9oMfmcmLbZt0f/PNRC4/LkXLgA313ijGc49BqQcxrpHtFgpf5JZEr75IhREK0hJsui41SUS3hwCMWB8HtvU5+WScHjr4nL1Cb7tngMVas4L0YB1Fog8d9UwzqXI3Uxc0z0egWt/Hb/zZ1RJNLzxWFO++724Gjw67xsA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772300563; c=relaxed/simple; bh=i1HvkQjXWbqm6+cFevEgkfc5JQGm0pBz1zHif6jCYd0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=F25rOUT7AnSWX6KLsS5xTyDGUzoPt4lDjedzs7wSSh6YS09Lv13tm6fuMVZKwGR/rDb+SGQsaxhfrgx0fCar+TSBZUtMMqHCPRzDT8T1lkp/FI003/ayFtBOENqWrHEvc7kkWesmsUwr6ea3Yhbvvhu0p6GykivXLeAcn6kqQpY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=nUGM0AOV; 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="nUGM0AOV" Received: by smtp.kernel.org (Postfix) with ESMTPSA id ACA95C116D0; Sat, 28 Feb 2026 17:42:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772300563; bh=i1HvkQjXWbqm6+cFevEgkfc5JQGm0pBz1zHif6jCYd0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nUGM0AOVMqVSB0rqEpN8F7IN9E5cuLcEG8ym/7AXU0PfvNP5y/sjw0SCLUIURU+Zt 87HdRy2OqAO9YObI7Z6rGeVF3c1PMWu04a//Ia9PiWU1m7IMnn2kXGmC+1ZFf7tNoz eWv7/S1KdUV+ttGI8zxiUuT/78FU5W3COuUJa+mn1Mcl6vcQMpTzGzSKJssrNbBY83 OND34Pfwc/ljfZblvgyRUurxdb8aOqx71UAVJUM9iznTuc3L1zro9GJuZKjEyi2/gN uD8mXZ+BGKC9LFTxIqIRS3QIJKlGEuEeyqvbrcR3D29Bm0f9nNXeGGUGros9bknnlj 9A3bYmO0dOjhQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Johan Hovold , Thierry Reding , Sasha Levin Subject: [PATCH 6.19 603/844] drm/tegra: dsi: fix device leak on probe Date: Sat, 28 Feb 2026 12:28:36 -0500 Message-ID: <20260228173244.1509663-604-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228173244.1509663-1-sashal@kernel.org> References: <20260228173244.1509663-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Johan Hovold [ Upstream commit bfef062695570842cf96358f2f46f4c6642c6689 ] 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 Signed-off-by: Sasha Levin --- 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