From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.zeus03.de (zeus03.de [194.117.254.33]) (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 64C423A35B1 for ; Thu, 22 Jan 2026 12:53:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=194.117.254.33 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769086402; cv=none; b=ckdOXGf5MfsgrUaz2jMGijHRjz6kcpTNggNRPj0TIPd+f5Hn85Z0x7gAPuYIs6bT/VEPVmUE98CUzc1WXci9nZqRRPQ/nyzXdLB+6qIMpDZXL23QAkSZ+Ce0lf+zzHfqNFTMjIRaFrX/DKOKGq3m8wV9EG8tPh2irrfZft3Gprc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769086402; c=relaxed/simple; bh=kYHg6cThuMYComAfsAoFF1c6tP6+eHK5PT/hDG9/IKo=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=BDk2pW1NNYR9Jfm9Eb4hWPZvcZA60fIRr+q+0owfQNRK1XqjdpyLurqwTop9kxcmd4Tf0CTEBWk5XxP7nOjVvRKUJ7r+LUVRRRyglORck1HSsIZwY37QXQb51kJkv2Bp4WpR+bQGpQzXiZYBwr0cK8G7cypjOBZRwFniXb8hSJc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sang-engineering.com; spf=pass smtp.mailfrom=sang-engineering.com; dkim=pass (2048-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b=JnDdtiU0; arc=none smtp.client-ip=194.117.254.33 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sang-engineering.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sang-engineering.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b="JnDdtiU0" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= sang-engineering.com; h=date:from:to:cc:subject:message-id :references:mime-version:content-type:content-transfer-encoding :in-reply-to; s=k1; bh=kYHg6cThuMYComAfsAoFF1c6tP6+eHK5PT/hDG9/I Ko=; b=JnDdtiU0akG7A4VRaWTTr/dPU/Svqsbl30rTaarUNFKwdWVyAy5dNIigg hOMmcj90MaS1hnElN1LKgvGfzO9VJRoUNg7JCu3YXlmB4lqaEf8i9LbCAVaLihOj 41lkMWII7L9z9dtGlG5r0+H1UWQiw/McbJigCDd/PUvjuB6woTxlUfIAHJJ6XM+A re24/mKFCkLUMqwAX9EikhrDuoCZsmWCN1EUGvznh2M8E175O2qpABOtfW0xcyDK venLxX2qqMtaSNugVxkQ6ZiQBR55gRKFRWz5tMz8PYyW66Df+2X+UTs3J7gALurD LXF8zLrNO0wpjFVwNyJwxGk5FVjZg== Received: (qmail 988934 invoked from network); 22 Jan 2026 13:53:06 +0100 Received: by mail.zeus03.de with UTF8SMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 22 Jan 2026 13:53:06 +0100 X-UD-Smtp-Session: l3s3148p1@2hWjhflIdrcujntl Date: Thu, 22 Jan 2026 13:53:04 +0100 From: Wolfram Sang To: David =?utf-8?Q?Nystr=C3=B6m?= Cc: Alexandre Belloni , Frank Li , linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] i3c: master: Add WO sysfs option to re-DDA bus. Message-ID: References: <20260122-i3c_rescan-v1-1-0c17071e232b@est.tech> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20260122-i3c_rescan-v1-1-0c17071e232b@est.tech> On Thu, Jan 22, 2026 at 12:36:30PM +0100, David Nyström wrote: > Add ability to rescan the i3c bus from userspace, i.e. provoke a DDA. Your are describing what you do but what is missing is why you want the change. What is the use case?