From nobody Sat Sep 26 20:30:50 2026 Received: from mail-m49197.qiye.163.com (mail-m49197.qiye.163.com [45.254.49.197]) (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 C34823FFD; Sun, 30 Aug 2026 14:48:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.254.49.197 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788101324; cv=none; b=Gu4gZT1kU9mxraAw9IxXw1xyvClB6e0QwIQ6lOslOxIoqqQr8sjGi2oLF8uWg2AjBK1odbV66P1WPEjIYEBi8T7wpny7l+hQkeXbYhURPuDUf2JKh6S74vonQzoFnuTRz0ow+XJ0lw5PvejD9IvTObJVhXHpYfVkTGGRv79Zmy0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788101324; c=relaxed/simple; bh=mQVJ7zDvrT6sNKYopfcwhYtHg5BubOvImcbeGOJdQyM=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=VKxy7mvIj5LBeZrgr1dBg7eWKjZTV0C+pL6t8LTQGfP0In08SX9YjrBuV8j3YNegy4CFTmcqz6CvwTD3x72XdlQpV2HJHUZqE8z++2cgTMJgqIfn1ZlBRZ5kHnqM4kRepc3VrcYDcgs7vhIFzLXYtCDg3hAwESyt9lFKuHR4lM4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=seu.edu.cn; spf=pass smtp.mailfrom=seu.edu.cn; dkim=pass (1024-bit key) header.d=seu.edu.cn header.i=@seu.edu.cn header.b=gUXhzYXJ; arc=none smtp.client-ip=45.254.49.197 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=seu.edu.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=seu.edu.cn Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=seu.edu.cn header.i=@seu.edu.cn header.b="gUXhzYXJ" Received: from PC-202605011814.localdomain (unknown [58.241.16.34]) by smtp.qiye.163.com (Hmail) with ESMTP id 4bd75f902; Sun, 30 Aug 2026 22:48:35 +0800 (GMT+08:00) From: Runyu Xiao To: tiffany.lin@mediatek.com Cc: andrew-ct.chen@mediatek.com, yunfei.dong@mediatek.com, mchehab@kernel.org, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, runyu.xiao@seu.edu.cn, jianhao.xu@seu.edu.cn, stable@vger.kernel.org Subject: [PATCH] media: mediatek: vcodec: Initialize context lock before firmware setup Date: Sun, 30 Aug 2026 22:48:27 +0800 Message-Id: <20260830144827.2701887-1-runyu.xiao@seu.edu.cn> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-HM-Tid: 0aa05324ca4503a1kunm748a56ff10419f X-HM-MType: 10 X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFITzdXWRgWCB1ZQUpXWS1ZQUlXWQ8JGhUIEh9ZQVkaHhlLVhhDT04aTUsdTR0ZSVYeHw 5VEwETFhoSFyQUDg9ZV1kYEgtZQVlOQ1VJT0pVSk1VSE9ZV1kWGg8SFR0UWUFZT0tIVUpLSEpPSE xVSktLVUpCS0tZBg++ DKIM-Signature: a=rsa-sha256; b=gUXhzYXJL1n6Ohtr4BC7UXBxUc8olWj4achRmmp4nPcWG2WD2SAWhEdkAF6ljCVtb8YPKhsZJQ+ePDT6TpRcpga4JN+Zb4F4qiAy0VGpJDPANw8WNJUfa41P2DGJwc0cw3zeR0uVFn+wMhFHte4KruOPTKs/ZIhCazFFx/5Nf6c=; s=default; c=relaxed/relaxed; d=seu.edu.cn; v=1; bh=s3dZ8lISZQr52REE7ec1HbSkTDws0HKFv6UJz6Thh6A=; h=date:mime-version:subject:message-id:from; Content-Type: text/plain; charset="utf-8" The VPU firmware setup registers a watchdog callback that accesses the encoder context lock. Initialize the lock before selecting the firmware implementation so the callback cannot observe an uninitialized lock during probe. Fixes: afaaf3a0f647 ("media: mediatek: vcodec: adding lock to protect encod= er context list") Cc: stable@vger.kernel.org Assisted-by: Codex:GPT-5 Signed-off-by: Runyu Xiao --- .../media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc_drv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc_= drv.c b/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc_drv.c index 4e4541b2f..e6cd3817a 100644 --- a/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc_drv.c +++ b/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc_drv.c @@ -255,6 +255,7 @@ static int mtk_vcodec_probe(struct platform_device *pde= v) =20 INIT_LIST_HEAD(&dev->ctx_list); dev->plat_dev =3D pdev; + spin_lock_init(&dev->dev_ctx_lock); =20 if (!of_property_read_u32(pdev->dev.of_node, "mediatek,vpu", &rproc_phandle)) { @@ -308,7 +309,6 @@ static int mtk_vcodec_probe(struct platform_device *pde= v) =20 mutex_init(&dev->enc_mutex); mutex_init(&dev->dev_mutex); - spin_lock_init(&dev->dev_ctx_lock); spin_lock_init(&dev->irqlock); =20 snprintf(dev->v4l2_dev.name, sizeof(dev->v4l2_dev.name), "%s", --=20 2.34.1