From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.15]) (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 7840A2E8B96; Thu, 20 Nov 2025 19:15:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.15 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763666112; cv=none; b=kLkehraKWz6TcJe/XNvA5jOGsX7RvKFz+we0UBBjdnToRmlApNXKonvJhoL+m49Cl3eoPCBxxb9oeEWRAAUN1W4srLS2P5E1ddYnGu/D67LZWSwgt377CDG3/56eS3ibF0Si6TiMNj3tD4dKlqiQu/vn+LHGzLGeZN01MnIyxRE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763666112; c=relaxed/simple; bh=GpSmpsR9NetbPJhQGjxFutnFsKHftqvhMSFwh84zcwA=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=uCLpOqyxeMofa7h4orxvZe7vdJJizuhJKliRXw5H5VUbH+z8Q5S6gJ2h8k4CCrK+6b2ecAWYdbD8qdISldRG9JqUOT6VxB0w97nEWwGR4rx8UeHefStb5dJbxpisVDKnBSbsZPYWXlRd3KEehLuec91Cp56Qvy8ED81g/JHxS5s= 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=HZ44JE1X; arc=none smtp.client-ip=192.198.163.15 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="HZ44JE1X" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1763666110; x=1795202110; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=GpSmpsR9NetbPJhQGjxFutnFsKHftqvhMSFwh84zcwA=; b=HZ44JE1Xh5airIdPVCvxxBjnT6Ix2uvwXbQh6z0l+XQuibRKJV2VFEMS QviMX1NeWkfNbjj2sPgjmOxzvDCIm4ZNDDoBARPlhcu3usRJVNytnxMPi voCtIobJgzdzUydvK8SPbVOdX/4egAZ6zWBuUfLfYfy8SxKT8V/+/qDn/ Qz0DVbjBrpSfMdzBqvk/gQlaEOoTOoRVZwx3hPtiTtSpuBPCcmL3NpA+6 fCftNr/o6Pgqe0saMfhQm3gT4uFlHYgOxT7N6CzPsSVQjuzdS3baP+wZO TSjmcEVDddYfg1FvTpTSyV4oaH7+Kf/z3+/CsQwXECPzvkxX6PdPDSG8Z A==; X-CSE-ConnectionGUID: MFAEZHYxRKaFKD0gmO1BJA== X-CSE-MsgGUID: FZ5AXCa7Qn+byfDwg8M4PQ== X-IronPort-AV: E=McAfee;i="6800,10657,11619"; a="65838708" X-IronPort-AV: E=Sophos;i="6.20,213,1758610800"; d="scan'208";a="65838708" Received: from fmviesa006.fm.intel.com ([10.60.135.146]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Nov 2025 11:15:09 -0800 X-CSE-ConnectionGUID: Lj2UXwM4QvSoozpG9EqitA== X-CSE-MsgGUID: JRP7KrHGShi83szIQwo8rg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.20,213,1758610800"; d="scan'208";a="191308310" Received: from amilburn-desk.amilburn-desk (HELO localhost) ([10.245.244.97]) by fmviesa006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Nov 2025 11:15:04 -0800 Date: Thu, 20 Nov 2025 21:15:02 +0200 From: Andy Shevchenko To: Bjorn Andersson , Stefan Wahren , Vinod Koul , Thomas Andreatta , Caleb Sander Mateos , dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org Cc: Olivier Dautricourt , Stefan Roese , Florian Fainelli , Broadcom internal kernel review list , Ray Jui , Scott Branden , Lars-Peter Clausen , Eugeniy Paltsev , Daniel Mack , Haojian Zhuang , Robert Jarzmik , Lizhi Hou , Brian Xu , Raj Kumar Rampelli , Michal Simek , Andrew Morton Subject: Re: [PATCH v3 00/13] dmaengine: introduce sg_nents_for_dma() and convert users Message-ID: References: <20251113151603.3031717-1-andriy.shevchenko@linux.intel.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: <20251113151603.3031717-1-andriy.shevchenko@linux.intel.com> Organization: Intel Finland Oy - BIC 0357606-4 - c/o Alberga Business Park, 6 krs, Bertel Jungin Aukio 5, 02600 Espoo On Thu, Nov 13, 2025 at 04:12:56PM +0100, Andy Shevchenko wrote: > A handful of the DMAengine drivers use same routine to calculate the number of > SG entries needed for the given DMA transfer. Provide a common helper for them > and convert. > > I left the new helper on SG level of API because brief grepping shows potential > candidates outside of DMA engine, e.g.: > > drivers/crypto/chelsio/chcr_algo.c:154: nents += DIV_ROUND_UP(less, entlen); > drivers/spi/spi-stm32.c:1495: /* Count the number of entries needed */ Vinod, what is your plan on the DMAengine patches? (Asking not only about this series) Please, tell if anything needs to be done from my side to help them being pulled. -- With Best Regards, Andy Shevchenko