From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.14]) (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 D03A7387347; Fri, 13 Mar 2026 10:26:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.14 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773397610; cv=none; b=m9nG6D8pnJDGIbXT3sEQRTOrz+MEaGjYeY+L5EL6rDTPWV5DOFvHnzv1ofeIn7hBQU5aRWajvr8jDJEvODgKMzVRO4yQs0Wexb+1b5Vj17M+zwr9ZKqgNulRgWxFpawww/vSCa75IBJTndIiKwsOUu9Kwxwh/GNZ9Qhbzp+Fby4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773397610; c=relaxed/simple; bh=lQpGYEnaHMFKKuxpTbNjB8KciXQJWiVo9haEk+Ps4dc=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=pqF59++hWN9nNw22ThrYwjwz7AppSfVjgMvYhgdOnlEqg8JuPoSeHWcALUAX1Y+CeN47H3f1FHy3br9unEq93yHyBy/vlrrzX/a4NmUtOgaLxJH3O6/bE2k9aO2UyZd3I3HWxrndulPYuHtTQDRs3T/by1U0gMOIRCJINMeRKQU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=FzNZ7xOO; arc=none smtp.client-ip=198.175.65.14 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="FzNZ7xOO" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1773397610; x=1804933610; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=lQpGYEnaHMFKKuxpTbNjB8KciXQJWiVo9haEk+Ps4dc=; b=FzNZ7xOOo3RaKRAzmOVtrHDhAQLY/u6de6bH8rN6kXcmzgdRcnFtBaIJ ENG0piRG6EHCvtpvbeGJrIhdJO8v+bRymWS4l530Jhe7eCuIsKS2LKK9B roxfe4QcTI6OmlLGvejQi4Ijb7Ad/HPDNqgKVNqylyLTUQ8AoR6GZeU2V mvYVkag375jq+1oXsPlH7RN1AUwPfaBJ4mSaSJD1gev2mW2DE2xT2YGC1 9Mwp/dMrzRLWVvul2jHPTeA9FoEWNujdbNcZ27VX6f+nMmx+BtnWJwSsa 6FtY+aEA6uW1iC9Koqo4sMNTca/3V+MB0js9cukpWYhKauHL8W9VY5kSq Q==; X-CSE-ConnectionGUID: COrFhc2xQ52W1UFf4QP3Eg== X-CSE-MsgGUID: Kt93skD9TBKgZDyLTZA4Fw== X-IronPort-AV: E=McAfee;i="6800,10657,11727"; a="78353728" X-IronPort-AV: E=Sophos;i="6.23,118,1770624000"; d="scan'208";a="78353728" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by orvoesa106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Mar 2026 03:26:49 -0700 X-CSE-ConnectionGUID: TBSWd9mqRkCy5MMzBhUHxg== X-CSE-MsgGUID: b2id4E6IQ2yggfINJGDVgQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,118,1770624000"; d="scan'208";a="259026688" Received: from dhhellew-desk2.ger.corp.intel.com (HELO kekkonen.fi.intel.com) ([10.245.245.224]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Mar 2026 03:26:48 -0700 Received: from kekkonen.localdomain (localhost [IPv6:::1]) by kekkonen.fi.intel.com (Postfix) with SMTP id 1BBB311F7D8; Fri, 13 Mar 2026 12:28:45 +0200 (EET) Date: Fri, 13 Mar 2026 12:28:45 +0200 Organization: Intel Finland Oy - BIC 0357606-4 - c/o Alberga Business Park, 6 krs, Bertel Jungin Aukio 5, 02600 Espoo From: Sakari Ailus To: "luo.liu" Cc: mchehab@kernel.org, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] media:v4l2-async:debugfs for registered subdevices Message-ID: References: <20260313075824.2818713-1-luo.liu.linux@163.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260313075824.2818713-1-luo.liu.linux@163.com> Hi Luo, On Fri, Mar 13, 2026 at 03:58:24PM +0800, luo.liu wrote: > Add a new debugfs file "registered_subdevices" under the "v4l2-async" > directory to display all registered subdevices in the subdev_list. This > helps with debugging by providing a clear view of all currently registered > V4L2 subdevices. Could you elaborate a little how has providing this information over debugfs helped you? -- Regards, Sakari Ailus