From patchwork Thu Sep 19 21:31:59 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Russell King X-Patchwork-Id: 276092 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id D96AC2C0110 for ; Fri, 20 Sep 2013 08:49:44 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754424Ab3ISWtl (ORCPT ); Thu, 19 Sep 2013 18:49:41 -0400 Received: from caramon.arm.linux.org.uk ([78.32.30.218]:47842 "EHLO caramon.arm.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754401Ab3ISWtk (ORCPT ); Thu, 19 Sep 2013 18:49:40 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=arm.linux.org.uk; s=caramon; h=Date:Sender:Message-Id:Subject:Cc:To:From:References:In-Reply-To; bh=SS5Bdu6Xsk04xAVKzl+UJngSn3+9bK655ZaSM7Tp8nU=; b=if5L6WpM19onStAxyrwqShv942v28mKN63cAtSEEd+TJ0PgKij5KZmATH7yJwKsbddArz1EdfPVkGzmxcq12jcaKLNzbHPP9eygNXwjR4R1Ms/To/PdyzkZpAspVn7PPk6bzaAdjAeimDhduRO2kzjME0xYZNhwvY+HTBsEfMeA=; Received: from e0022681537dd.dyn.arm.linux.org.uk ([2002:4e20:1eda:1:222:68ff:fe15:37dd]:58770 helo=rmk-PC.arm.linux.org.uk) by caramon.arm.linux.org.uk with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.76) (envelope-from ) id 1VMlpi-0008VP-SF; Thu, 19 Sep 2013 22:32:19 +0100 Received: from rmk by rmk-PC.arm.linux.org.uk with local (Exim 4.76) (envelope-from ) id 1VMlpP-0007fp-IC; Thu, 19 Sep 2013 22:31:59 +0100 In-Reply-To: <20130919212235.GD12758@n2100.arm.linux.org.uk> References: <20130919212235.GD12758@n2100.arm.linux.org.uk> From: Russell King To: alsa-devel@alsa-project.org, b43-dev@lists.infradead.org, devel@driverdev.osuosl.org, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, e1000-devel@lists.sourceforge.net, linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linux-doc@vger.kernel.org, linux-fbdev@vger.kernel.org, linux-ide@vger.kernel.org, linux-media@vger.kernel.org, linux-mmc@vger.kernel.org, linux-nvme@lists.infradead.org, linux-omap@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-samsung-soc@vger.kernel.org, linux-scsi@vger.kernel.org, linux-tegra@vger.kernel.org, linux-usb@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, Solarflare linux maintainers , uclinux-dist-devel@blackfin.uclinux.org Cc: Jeff Kirsher , Jesse Brandeburg , Bruce Allan , Carolyn Wyborny , Don Skidmore , Greg Rose , Peter P Waskiewicz Jr , Alex Duyck , John Ronciak , Tushar Dave Subject: [PATCH 07/51] DMA-API: net: intel/ixgbe: fix 32-bit DMA mask handling Message-Id: Date: Thu, 19 Sep 2013 22:31:59 +0100 Sender: linux-ide-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ide@vger.kernel.org The fallback to 32-bit DMA mask is rather odd: if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) && !dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) { pci_using_dac = 1; } else { err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); if (err) { err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); if (err) { dev_err(&pdev->dev, "No usable DMA configuration, aborting\n"); goto err_dma; } } pci_using_dac = 0; } This means we only set the coherent DMA mask in the fallback path if the DMA mask set failed, which is silly. This fixes it to set the coherent DMA mask only if dma_set_mask() succeeded, and to error out if either fails. Signed-off-by: Russell King --- drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 15 +++++---------- 1 files changed, 5 insertions(+), 10 deletions(-) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index 7aba452..b1dc844 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -7475,19 +7475,14 @@ static int ixgbe_probe(struct pci_dev *pdev, const struct pci_device_id *ent) if (err) return err; - if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) && - !dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) { + if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64))) { pci_using_dac = 1; } else { - err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); + err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); if (err) { - err = dma_set_coherent_mask(&pdev->dev, - DMA_BIT_MASK(32)); - if (err) { - dev_err(&pdev->dev, - "No usable DMA configuration, aborting\n"); - goto err_dma; - } + dev_err(&pdev->dev, + "No usable DMA configuration, aborting\n"); + goto err_dma; } pci_using_dac = 0; }