From patchwork Sun Jan 9 15:41:43 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe JAILLET X-Patchwork-Id: 12707819 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 33551C433F5 for ; Sun, 9 Jan 2022 15:42:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235921AbiAIPl6 (ORCPT ); Sun, 9 Jan 2022 10:41:58 -0500 Received: from smtp03.smtpout.orange.fr ([80.12.242.125]:64102 "EHLO smtp.smtpout.orange.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235914AbiAIPl6 (ORCPT ); Sun, 9 Jan 2022 10:41:58 -0500 Received: from pop-os.home ([90.11.185.88]) by smtp.orange.fr with ESMTPA id 6aKQniyrAIEdl6aKQnROA1; Sun, 09 Jan 2022 16:41:56 +0100 X-ME-Helo: pop-os.home X-ME-Auth: YWZlNiIxYWMyZDliZWIzOTcwYTEyYzlhMmU3ZiQ1M2U2MzfzZDfyZTMxZTBkMTYyNDBjNDJlZmQ3ZQ== X-ME-Date: Sun, 09 Jan 2022 16:41:56 +0100 X-ME-IP: 90.11.185.88 From: Christophe JAILLET To: Claudiu Manoil , "David S. Miller" , Jakub Kicinski , Yangbo Lu Cc: linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, Christophe JAILLET , netdev@vger.kernel.org Subject: [PATCH] net: enetc: Remove useless DMA-32 fallback configuration Date: Sun, 9 Jan 2022 16:41:43 +0100 Message-Id: X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org As stated in [1], dma_set_mask() with a 64-bit mask never fails if dev->dma_mask is non-NULL. So, if it fails, the 32 bits case will also fail for the same reason. Simplify code and remove some dead code accordingly. [1]: https://lkml.org/lkml/2021/6/7/398 Signed-off-by: Christophe JAILLET --- drivers/net/ethernet/freescale/enetc/enetc.c | 8 ++------ drivers/net/ethernet/freescale/enetc/enetc_ptp.c | 9 ++------- 2 files changed, 4 insertions(+), 13 deletions(-) diff --git a/drivers/net/ethernet/freescale/enetc/enetc.c b/drivers/net/ethernet/freescale/enetc/enetc.c index eacb41f86bdb..d6930a797c6c 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc.c +++ b/drivers/net/ethernet/freescale/enetc/enetc.c @@ -2897,12 +2897,8 @@ int enetc_pci_probe(struct pci_dev *pdev, const char *name, int sizeof_priv) /* set up for high or low dma */ err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); if (err) { - err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); - if (err) { - dev_err(&pdev->dev, - "DMA configuration failed: 0x%x\n", err); - goto err_dma; - } + dev_err(&pdev->dev, "DMA configuration failed: 0x%x\n", err); + goto err_dma; } err = pci_request_mem_regions(pdev, name); diff --git a/drivers/net/ethernet/freescale/enetc/enetc_ptp.c b/drivers/net/ethernet/freescale/enetc/enetc_ptp.c index 36b4f51dd297..17c097cef7d4 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc_ptp.c +++ b/drivers/net/ethernet/freescale/enetc/enetc_ptp.c @@ -42,15 +42,10 @@ static int enetc_ptp_probe(struct pci_dev *pdev, if (err) return dev_err_probe(&pdev->dev, err, "device enable failed\n"); - /* set up for high or low dma */ err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); if (err) { - err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); - if (err) { - dev_err(&pdev->dev, - "DMA configuration failed: 0x%x\n", err); - goto err_dma; - } + dev_err(&pdev->dev, "DMA configuration failed: 0x%x\n", err); + goto err_dma; } err = pci_request_mem_regions(pdev, KBUILD_MODNAME);