From nobody Sun Feb 8 00:12:31 2026 Received: from m16.mail.163.com (m16.mail.163.com [117.135.210.2]) (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 419DE1DFD96; Tue, 20 Jan 2026 06:57:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=117.135.210.2 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768892278; cv=none; b=HtpG73WPRs/8aYXp7yaTI/JkgnQ8zumsBU/NWfzF/u1jYTxSBEaGHMQre6U36aRd0YAPJPZUDtfN+dE8RreiNescZ5pmBjOihoMwh6udf/V1OKuon0ZwII/btH+1AZOsV7YyFwdf2LRAfn1sQO1bTfkw7nrKx7Auh1oL1HNG3jw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768892278; c=relaxed/simple; bh=hCg5cQ6mjVuDt3p1MAt/aaspYrW0tgEQvAgOByGWI1w=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=NMyFFUjyD0h5yWr+UWJIyS7hpsGfS09olWCSR1tU7XgVUAec6+OeWuEMC3+JFOa8UKIcdZXhaAVWyY9uBjHZkYUV2TqWynVX+irnK0Rp4ZMb4Paw7Lfbspj4Py/pywBxpcascV8KtL8OCcZ45uJb8QQxQklJ2v1CvMh6gCORqqg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com; spf=pass smtp.mailfrom=163.com; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b=qLKqIXz3; arc=none smtp.client-ip=117.135.210.2 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=163.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="qLKqIXz3" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=QN cn3sNklWIW7mslFDbQ4mwgfAUtkTvwtiUK0HmaGP0=; b=qLKqIXz3mQJiCwX0/v 67KJo+XkGJLCnFlV16s7q+ny24kkOuG61v9VzKeo0q5+VZ8nEiOJpqC7mcrbMAki cM+/BeoWX5I1VHADAlHR9sCMY3S9UUpq4nQL3krjYzodWstIKF8+ly8eSubEgD94 oP5doMNgHDOiNFfmIEJHuI8nk= Received: from 163.com (unknown []) by gzga-smtp-mtada-g0-0 (Coremail) with SMTP id _____wA3Q6dNJ29p8xS7Gw--.54789S2; Tue, 20 Jan 2026 14:57:18 +0800 (CST) From: "luo.liu" To: sakari.ailus@linux.intel.com, mchehab@kernel.org Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, luo.liu.linux@163.com Subject: [PATCH] v4l2-async: add debugfs under CONFIG_DEBUG_FS Date: Tue, 20 Jan 2026 14:57:10 +0800 Message-Id: <20260120065710.1120819-1-luo.liu.linux@163.com> X-Mailer: git-send-email 2.25.1 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-CM-TRANSID: _____wA3Q6dNJ29p8xS7Gw--.54789S2 X-Coremail-Antispam: 1Uf129KBjvJXoW7Xry5CF45tr4DZF4UKF47XFb_yoW8JF48pw 4DKFsIkrW8Zr48urWfAry5Wr93X34vgF43ZrZxu34fXa4fZFnrJrySqryUZr4vgrWxJF1a qrWfArW3KFyxGr7anT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x0pitfQAUUUUU= X-CM-SenderInfo: hoxrhztlxozxxqx0qiywtou0bp/xtbC7A4ThGlvJ04xRAAA3v Content-Type: text/plain; charset="utf-8" All debugfs-related code is guarded by CONFIG_DEBUG_FS to avoid bloating the kernel when debugfs is disabled. Signed-off-by: luo.liu --- drivers/media/v4l2-core/v4l2-async.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core= /v4l2-async.c index 1c08bba9ecb9..ad4c0441b00e 100644 --- a/drivers/media/v4l2-core/v4l2-async.c +++ b/drivers/media/v4l2-core/v4l2-async.c @@ -966,21 +966,27 @@ static int pending_subdevs_show(struct seq_file *s, v= oid *data) } DEFINE_SHOW_ATTRIBUTE(pending_subdevs); =20 +#ifdef CONFIG_DEBUG_FS static struct dentry *v4l2_async_debugfs_dir; +#endif =20 static int __init v4l2_async_init(void) { +#ifdef CONFIG_DEBUG_FS v4l2_async_debugfs_dir =3D debugfs_create_dir("v4l2-async", NULL); debugfs_create_file("pending_async_subdevices", 0444, v4l2_async_debugfs_dir, NULL, &pending_subdevs_fops); =20 +#endif return 0; } =20 static void __exit v4l2_async_exit(void) { +#ifdef CONFIG_DEBUG_FS debugfs_remove_recursive(v4l2_async_debugfs_dir); +#endif } =20 subsys_initcall(v4l2_async_init); base-commit: d08c85ac8894995d4b0d8fb48d2f6a3e53cd79ab --=20 2.25.1