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 8DE34394788 for ; Sun, 27 Sep 2026 12:43:34 +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=1790513016; cv=none; b=j/1gVkVeL2BDrBQKB8+p06p5FKAdj55i7GKu1/TOKb1piwurOKV9Rx7EMvvxcKKAy14kwnXtUzPmrurQxDgfKTJZBYGjdj/KIIkBys81lIHzy9vvmUmCcMEvQehMLf3kCuEh8lLMRzSAuN5I3aO+yr6EuXvjeglk3esRvm3Y5HE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790513016; c=relaxed/simple; bh=RJxJYXaQJ4o571dsAf5kfmA0YEOSYHuN8V/EI6U6FR8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=oHLn31XrnTV3Zxp6Qi0wQxiI7T/lGx38cTtBPP7vKeI9VI6oiiJTupxV6s8evhpV1vLfSTKHuk/nc8YgPFzKtlnjABF5bRV9dDZaffnBpOImWx2KSWRAurXRgZUevXQOa+nkSP3MV+QcuEOvzFa2U1k+o6hVqRl7WgoHWn/Hb1o= 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=FBGNkhBy; 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="FBGNkhBy" 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:in-reply-to; s=k1; bh=O6pz eO2/1NUWoPcH0yvHjuJycDHC8pFB6mw00p27a7k=; b=FBGNkhByNvRBLzcDVEZN e6yHkKXr7cNkLsrOx393efd9rssQzoUoxaVCCbwHXg3IUf/R7+pozak5AnvEDVRN oSeYz4p5p4iT6dyOQ7ZefRRKoZeGmaDJ4fZd+vmU+XFzT/sHwLosZs051Ldfkp5Z O+jsTiVXE/rp7XfNsVkBEgmF8Lj0sn5NlDQPJu9nFhXWo089Jw9dMxd2PGXuc3lq /mOBMqavjHU8PcWIkKB1tnrjeldsaxisPjuo9BmXhe1R/SOSvua9pSZSE3ZWYBDk vylVL2aR/M87vIWdyOjPsYfRto3n9HnsQLIeSLok5tMH1EWlnr+yZkVHDmFPa8cj YQ== Received: (qmail 2606946 invoked from network); 27 Sep 2026 14:43:31 +0200 Received: by mail.zeus03.de with ESMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 27 Sep 2026 14:43:31 +0200 X-UD-Smtp-Session: l3s3148p1@9kYFTHZcBsoujnuD Date: Sun, 27 Sep 2026 14:43:31 +0200 From: Wolfram Sang To: Koichiro Den Cc: Frank Li , linux-renesas-soc@vger.kernel.org, Vinod Koul , Frank Li , Geert Uytterhoeven , Magnus Damm , Laurent Pinchart , dmaengine@vger.kernel.org Subject: Re: [PATCH 2/3] dmaengine: rcar-dmac: Add missing dma_descriptor_unmap() Message-ID: References: <20260917071208.36888-1-wsa+renesas@sang-engineering.com> <20260917071208.36888-3-wsa+renesas@sang-engineering.com> <3odvtlxs62ulw4obrzfy3xlf74k4wltjkj6k4axsmdx3hnyo3a@rx2pm422eozp> Precedence: bulk X-Mailing-List: linux-renesas-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="4bgaCHnQSGDw6wak" Content-Disposition: inline In-Reply-To: <3odvtlxs62ulw4obrzfy3xlf74k4wltjkj6k4axsmdx3hnyo3a@rx2pm422eozp> --4bgaCHnQSGDw6wak Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Hi Koichiro-san, > actually fine, but in any case, I personally feel the unmap infrastructure could > use some cleanup.) I share this thought, and I guess, Laurent expressed this, too. This is a separate task to tackle, though. I still think your original patch here makes the situation better by making sure the cache gets invalidated and should be applied. Or am I missing something? Happy hacking, Wolfram --4bgaCHnQSGDw6wak Content-Type: application/pgp-signature; name=signature.asc -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAmq5D3MACgkQFA3kzBSg KbYhAQ//VA2nnaFKR847DEFKEgRBILdXZbZcUuDOkVXJjLNj6F3yDXHeRNlBiPUn EptAYSXL4D+uzU9x4guWs5yt7FbeyseKPBW5EWF2i7JCOzKqyRcJwpjC2PbTXTbX EHuIDRCDuLEu2n2v7qatOxnq3aEsfO699Bn7JiL+x6FicX+mJa90tD+GdpQHiMX7 RsBmxLLI/83pgG1ZwItZtoCRcIX8f3478XnmYhGdhuARsuQ+6UcbPxX7mUwZZauE KIpkkG6wKyCAx+dMrxDPFHj0d10RKMbaCTkjDJv+8dB+IURpuO7uWe/HVKum8FBf WufPPa/phA3n9EtTnPHbDU8+uQLqwaGuOPYXUfgqPbqE0LJQilRXPRsdLBGbDZuP NZmGHIwIVxpOkriR/TQSO5KJjzwMQWt7cAJsnX/+Tnu4oPdo1a2yNTeOvpvlIEtQ VuW8yRCzmpvPYWQkBHETLGqZC7+vGlcwf5FzCGouE9Cfu7srn4mK9G+ykvurbD2O cYseKQwV3lb/p97OdHED5UcpF9QUGw6EEuy4pXDFgW7pnGsllqUpmSQ41Jtf+8f9 9htk3ILskGxKn6KhFaSkFLuEFuzH/ZtVpN++WySM+6z0kaqEJdhRiD5ENADWJLfJ nGqgXR4ljcIAgEkhYTMGdV6CudbA0TXzLNRw2hAF2qFK3GZQNlo= =pS8K -----END PGP SIGNATURE----- --4bgaCHnQSGDw6wak--