From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 C79DA215161 for ; Sat, 17 Oct 2026 09:57:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792231046; cv=none; b=B082DNtscEvDtAJ7tmvdKIhFgSjzFd+FweqqQFCyI/M358iSkdSyD+UW0GVVCJKQPkq4qAn4cowVHEBfucC8pwzXy7cHbIO+R4oydU+f1Q6HF67GP8Ms4TUuOogGmmGZPZlcNuFDw0UXgkLasSmtkuRjPZ5l0KZmgdiIiJp2N7o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792231046; c=relaxed/simple; bh=vELMO02HhRogd/0zYYio/uR/r5cac3/bBCdxYFXFbak=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Z8DC2e0RwZL5HcVmYEMJrBFd2xp7Igxtmy/vmQXrRTESSmLYJ4GmwgTpFibN19kUYw18zg/urmZ9+uPBxYX57bu8x1EoUOpb0P1atYf47HYJGytPnsGMZTp5t+6iFfbRAfPyAjw6DOYXhYzZRb7jQVCZJpyNwiG9BqqIEtkDbWg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=RZuaUu4u; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="RZuaUu4u" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BBE8D1F000C4; Sat, 17 Oct 2026 09:57:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1792231045; bh=m3Fon1BPVNySA2cP/H8bZCoF5CT4ont1XGr76mePwyE=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=RZuaUu4uZ3DAKFWEZHdcev24npS98VeDOTtCs57T2U8SqUyKUxE0hb6S551/zB+PI SzSStWsMt7Rzeho9QEvktPmDkk0CyDT/tH16bdDJSKOVSNJ54L1RP5mgklzSNNr2fw lJSliQqHtFRMw48GApy64ztpr5nQbptmZ1E6Q9X6RE8FfIl1VU5ZTFeI2FNK118dMu digui4t8I0ANzjKTbpgvaC+Nj8jnP4K/aS9c/sxlWw8GM78+qbdyfhoXyYQ1L+kNeb y3LdXC0ZXKvFzhokHUwyxPB4X3rPmRz8jWlJ7Ed5/ip+wI5O/UiB46Xe74lpy//3Om ZmdH71LCii7ew== Date: Sat, 17 Oct 2026 10:57:27 +0100 From: Vinod Koul To: Wolfram Sang Cc: dmaengine@vger.kernel.org, Basavaraj Natikar , Dave Jiang , Frank Li , Kelvin Cao , Logan Gunthorpe , Vinicius Costa Gomes Subject: Re: [PATCH 0/8] dmaengine: unmap descriptor before completing cookie Message-ID: References: <20261010124348.19055-1-wsa+renesas@sang-engineering.com> Precedence: bulk X-Mailing-List: dmaengine@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: On 12-10-26, 12:42, Wolfram Sang wrote: > > > We found out that we need to unmap descriptors before completing a > > cookie [1]. Fix the drivers for which this is a no-brainer and just > > switches those two function calls. > > Okay, according to Sashiko, patches 1+5+6+7 are no no-brainers but need > a deeper analysis which I am not able to provide. > > So, we could drop this series entirely because it seems more trustworthy > to let people with actual hardware fix these issues. Maybe a FIXME could > be added instead to these drivers. > > Or, we can apply at least patches 2+3+4+8 where Sashiko found no issues. > > I tend to use the first option but am open to whatever maintainers think > about it. yeah lets get some testing into these. I would hope people who care about these would test this out... FIXME is fine too Thanks -- ~Vinod