From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 97BAEC4BA24 for ; Thu, 27 Feb 2020 12:38:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 69EC924698 for ; Thu, 27 Feb 2020 12:38:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="QjZeglP3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729142AbgB0Mi1 (ORCPT ); Thu, 27 Feb 2020 07:38:27 -0500 Received: from lelv0143.ext.ti.com ([198.47.23.248]:35860 "EHLO lelv0143.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729127AbgB0MiZ (ORCPT ); Thu, 27 Feb 2020 07:38:25 -0500 Received: from fllv0035.itg.ti.com ([10.64.41.0]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id 01RCbrEZ089743; Thu, 27 Feb 2020 06:37:53 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1582807073; bh=N0ZTnsWAGol2AuTpDnmtxbZq6ogLFkSohABUVzcd+sE=; h=From:To:CC:Subject:Date; b=QjZeglP3AIt+Vfhur4e95S7ux4fT6vGQuuR59x4CU4MDfozKzCGK7gX6k01I/FJo/ 3B/CfbHDM8esY4J4EqdSOh0tSnxweSOHKtl/x15h1+3Q70VvdK4FV2gbbtoS0swBfq DZndI5YUx/MGSer6tbBQ1yeUzNCaEC1TmDZ1EQEg= Received: from DFLE113.ent.ti.com (dfle113.ent.ti.com [10.64.6.34]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTP id 01RCbrsE130414; Thu, 27 Feb 2020 06:37:53 -0600 Received: from DFLE100.ent.ti.com (10.64.6.21) by DFLE113.ent.ti.com (10.64.6.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3; Thu, 27 Feb 2020 06:37:52 -0600 Received: from lelv0326.itg.ti.com (10.180.67.84) by DFLE100.ent.ti.com (10.64.6.21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3 via Frontend Transport; Thu, 27 Feb 2020 06:37:52 -0600 Received: from feketebors.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id 01RCbnvN100207; Thu, 27 Feb 2020 06:37:49 -0600 From: Peter Ujfalusi To: , , , , , , , CC: , , , Subject: [PATCH 0/7] mtd: rawnand: Convert drivers to use dma_request_chan() Date: Thu, 27 Feb 2020 14:37:42 +0200 Message-ID: <20200227123749.24064-1-peter.ujfalusi@ti.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, With dma_request_chan() drivers can know why the channel request failed and depending on how they are implemented can handle the failure in a best effort, either deferring or falling back to PIO mode. Regards, Peter --- Peter Ujfalusi (7): mtd: rawnand: gpmi: Use dma_request_chan() instead dma_request_slave_channel() mtd: rawnand: marvell: Release DMA channel on error mtd: rawnand: marvell: Use dma_request_chan() instead dma_request_slave_channel() mtd: rawnand: sunxi: Use dma_request_chan() instead dma_request_slave_channel() mtd: rawnand: qcom: Release resources on failure within qcom_nandc_alloc() mtd: rawnand: qcom: Use dma_request_chan() instead dma_request_slave_channel() mtd: rawnand: stm32_fmc2: Use dma_request_chan() instead dma_request_slave_channel() drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c | 21 +++-- drivers/mtd/nand/raw/marvell_nand.c | 38 +++++--- drivers/mtd/nand/raw/qcom_nandc.c | 105 +++++++++++++-------- drivers/mtd/nand/raw/stm32_fmc2_nand.c | 44 +++++++-- drivers/mtd/nand/raw/sunxi_nand.c | 15 ++- 5 files changed, 149 insertions(+), 74 deletions(-) -- Peter Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki