From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpout-02.galae.net (smtpout-02.galae.net [185.246.84.56]) (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 2DCA637F734 for ; Thu, 2 Apr 2026 07:15:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.246.84.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775114127; cv=none; b=aMhZQbdJEJqYYPcnQjOR77nC2hBNT1TC1aQ7mGHr03EX92QKnwLA6igNXNqe4i6NGA9Rzgd4gpdK2exnrcS3fExhof5iFQ/Zx+Bdj223oVtYHZJR9mS93/b9CFgYIq9GGas5vdOBXkr/Cb0QzxrlCJ6yqkKSugVR7OiI8QqsyOU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775114127; c=relaxed/simple; bh=+HFsWUzyK4Hj/rQ4tcbd7L1FPNrg8LdyWFQfAUS5LRw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=ogKgBhmhZ31Uctdo/sqLIySWX+Dp5osmehN0khHbITbyxMYrVWv95QJUm7gVY2U7O5QZvGvZ4JWf+EFEuGvvSB/Z/wx6Ece16danQ3aygOKLQrxqMYP0GWIA5kTwIHyEyVwhHNRzIF2l//pmohxe8A75Tpizc0CBaFpLoXuDdfY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=I/o4QYXf; arc=none smtp.client-ip=185.246.84.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="I/o4QYXf" Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-02.galae.net (Postfix) with ESMTPS id 613CF1A30E5; Thu, 2 Apr 2026 07:15:22 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 2B9155FDEB; Thu, 2 Apr 2026 07:15:22 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 36F22104512D9; Thu, 2 Apr 2026 09:15:17 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1775114121; h=from:subject:date:message-id:to:cc:mime-version:content-type: in-reply-to:references; bh=wiKrDAWk4fSxvPGd0lY2pBYZ/Gb7wXMPPdOhaXRKJW4=; b=I/o4QYXfPbLflteyQTKBgqHu7wN1CIfFop9hl/h3U1rXFIrf2JLf5lqXgoQcWUCxLR3wgs RzYwuu80/JEPXQA/vyl7ce7xY4Q+tPtRMscjetcgXLLfXczjEsKvuR91qvRpkp4q112q8d 2PpU8SsKtfPYLxQdi1+UvS9N3wEucrxvKIV/CiTpTqUMuYF0H/QKAKOHSpto0AsJvTZjeE gtWA5L3FwWKCuZzYR30UPli9GdtyO7D7buwMWbF0UxXZdZAZ/wzpNphNwJLvw0mfTmHkiK W26NUQkGWMmKh5PppQOwcn1A8G4s2DfNkYIxstZzJ193ct4ujorz2KajyokHPg== Date: Thu, 2 Apr 2026 09:15:17 +0200 From: Alexandre Belloni To: Billy Tsai Cc: Adrian Hunter , Frank Li , Nicolas Pitre , Boris Brezillon , "linux-i3c@lists.infradead.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH] i3c: mipi-i3c-hci: fix atomic updates to RING_OPERATION1 register Message-ID: <2026040207151741220dbd@mail.local> References: <20260331-i3c-hci-dma-lock-v1-1-708bc5848381@aspeedtech.com> <17efbe5d-6f9f-41b6-95ef-7a84e2ed5029@intel.com> 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=us-ascii Content-Disposition: inline In-Reply-To: X-Last-TLS-Session-Version: TLSv1.3 Hello, On 01/04/2026 08:04:45+0000, Billy Tsai wrote: > Hi Adrian, > > Thank you for the clarification. I overlooked the lock in i3c_hci_irq_handler() in core.c. Just to be clear, did you use AI to find the issue ? -- Alexandre Belloni, co-owner and COO, Bootlin Embedded Linux and Kernel engineering https://bootlin.com