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 0B8372F0C64; Mon, 22 Sep 2025 19:40:20 +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=1758570020; cv=none; b=orRzSZuASw10GIjHLWn2AULE3Oi4NE1cWl5cihEa9ifG3pSXMqZrcNQBq8nLzLl+mIQNPayrMiqJE/fVUEv/b0E7i7zpmpB8Z3Pzb7+gEEDjCS2Rg0kPccxcZGUNDyy5boXss6vNbdg3hKVk3hP4c0asyyzy0PGn/iueRzKfA/8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758570020; c=relaxed/simple; bh=go+4smwS+YvjUO+VLu9o2SF40HzW1Dfzh0/mf6eEQlQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=tkl6r2t06VXjiikJCgNppfHVnZ4SF7z1HL1G5nYqaB3YN9L5rAMkU5VAsjeaLIPm8SILGI6g7XkMyezW853etUCOud0heTJF4YMJb7AQ/oRS3cW80tHr52uGBUT2xhIo0obIq2apFIN4Gp5AksujbRjCwcroi+0ZYs1ydlhnYi4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Rew6JsuL; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Rew6JsuL" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 97675C4CEF0; Mon, 22 Sep 2025 19:40:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1758570019; bh=go+4smwS+YvjUO+VLu9o2SF40HzW1Dfzh0/mf6eEQlQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Rew6JsuLStK8T8042f3m/8t+xcgII3TfFFWsJ56rUwwj1NpcTctDis3G7TlN75E/B 5gd9s79A71jHPIkEviWyVPASQjmmxYrCCjaqYVl1kodUDlPOOrGx5yNrn2F0YaOto2 QQLfDdltihGfVEWLBQhrZPDIEdE6RyK0TRmtft4U= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Hulk Robot , Qi Xi , Luca Ceresoli , Dmitry Baryshkov , Sasha Levin Subject: [PATCH 6.12 078/105] drm: bridge: cdns-mhdp8546: Fix missing mutex unlock on error path Date: Mon, 22 Sep 2025 21:30:01 +0200 Message-ID: <20250922192410.936012222@linuxfoundation.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20250922192408.913556629@linuxfoundation.org> References: <20250922192408.913556629@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Qi Xi [ Upstream commit 288dac9fb6084330d968459c750c838fd06e10e6 ] Add missing mutex unlock before returning from the error path in cdns_mhdp_atomic_enable(). Fixes: 935a92a1c400 ("drm: bridge: cdns-mhdp8546: Fix possible null pointer dereference") Reported-by: Hulk Robot Signed-off-by: Qi Xi Reviewed-by: Luca Ceresoli Reviewed-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20250904034447.665427-1-xiqi2@huawei.com Signed-off-by: Luca Ceresoli Signed-off-by: Sasha Levin --- drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c index 9ba2a667a1f3a..b18bdb2daddf8 100644 --- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c +++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c @@ -2054,8 +2054,10 @@ static void cdns_mhdp_atomic_enable(struct drm_bridge *bridge, mhdp_state = to_cdns_mhdp_bridge_state(new_state); mhdp_state->current_mode = drm_mode_duplicate(bridge->dev, mode); - if (!mhdp_state->current_mode) - return; + if (!mhdp_state->current_mode) { + ret = -EINVAL; + goto out; + } drm_mode_set_name(mhdp_state->current_mode); -- 2.51.0