From patchwork Sun Jan 9 12:19:28 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe JAILLET X-Patchwork-Id: 12707766 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 210AAC433EF for ; Sun, 9 Jan 2022 12:19:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235487AbiAIMT4 (ORCPT ); Sun, 9 Jan 2022 07:19:56 -0500 Received: from smtp09.smtpout.orange.fr ([80.12.242.131]:57515 "EHLO smtp.smtpout.orange.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233254AbiAIMT4 (ORCPT ); Sun, 9 Jan 2022 07:19:56 -0500 Received: from pop-os.home ([90.11.185.88]) by smtp.orange.fr with ESMTPA id 6XAunC92uUujj6XAvnIOjd; Sun, 09 Jan 2022 13:19:54 +0100 X-ME-Helo: pop-os.home X-ME-Auth: YWZlNiIxYWMyZDliZWIzOTcwYTEyYzlhMmU3ZiQ1M2U2MzfzZDfyZTMxZTBkMTYyNDBjNDJlZmQ3ZQ== X-ME-Date: Sun, 09 Jan 2022 13:19:54 +0100 X-ME-IP: 90.11.185.88 From: Christophe JAILLET To: Ariel Elior , Sudarsana Kalluru , Manish Chopra , "David S. Miller" , Jakub Kicinski Cc: linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, Christophe JAILLET , netdev@vger.kernel.org Subject: [PATCH] bnx2x: Remove useless DMA-32 fallback configuration Date: Sun, 9 Jan 2022 13:19:28 +0100 Message-Id: <29608a525876afddceabf8f11b2ba606da8748fc.1641730747.git.christophe.jaillet@wanadoo.fr> 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. Moreover, dma_set_mask_and_coherent() returns 0 or -EIO, so the return code of the function can be used directly. Finally, inline bnx2x_set_coherency_mask() because it is now only a wrapper for a single dma_set_mask_and_coherent() call. Simplify code and remove some dead code accordingly. [1]: https://lkml.org/lkml/2021/6/7/398 Signed-off-by: Christophe JAILLET --- .../net/ethernet/broadcom/bnx2x/bnx2x_main.c | 19 ++++--------------- 1 file changed, 4 insertions(+), 15 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c index 4953f5e1e390..774c1f1a57c3 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c @@ -13044,19 +13044,6 @@ static const struct net_device_ops bnx2x_netdev_ops = { .ndo_features_check = bnx2x_features_check, }; -static int bnx2x_set_coherency_mask(struct bnx2x *bp) -{ - struct device *dev = &bp->pdev->dev; - - if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)) != 0 && - dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32)) != 0) { - dev_err(dev, "System does not support DMA, aborting\n"); - return -EIO; - } - - return 0; -} - static void bnx2x_disable_pcie_error_reporting(struct bnx2x *bp) { if (bp->flags & AER_ENABLED) { @@ -13134,9 +13121,11 @@ static int bnx2x_init_dev(struct bnx2x *bp, struct pci_dev *pdev, goto err_out_release; } - rc = bnx2x_set_coherency_mask(bp); - if (rc) + rc = dma_set_mask_and_coherent(&bp->pdev->dev, DMA_BIT_MASK(64)); + if (rc) { + dev_err(&bp->pdev->dev, "System does not support DMA, aborting\n"); goto err_out_release; + } dev->mem_start = pci_resource_start(pdev, 0); dev->base_addr = dev->mem_start;