Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752328AbaKDTGv (ORCPT ); Tue, 4 Nov 2014 14:06:51 -0500 Received: from exprod5og103.obsmtp.com ([64.18.0.145]:51644 "HELO exprod5og103.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752185AbaKDTGt (ORCPT ); Tue, 4 Nov 2014 14:06:49 -0500 From: Feng Kan To: patches@apm.com, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, mathias.nyman@intel.com Cc: Feng Kan , Bao Truong Subject: [PATCH V2] usb:host:xhci-plat: 64-bit dma addressing support Date: Tue, 4 Nov 2014 11:06:49 -0800 Message-Id: <1415128009-12182-1-git-send-email-fkan@apm.com> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Use dma_addr_t to support 64-bit plaforms, which access beyond the default 32 bit address range. Signed-off-by: Bao Truong Signed-off-by: Feng Kan --- Changes: V2: fixed GKH's comment regarding not mark up the comment after code change. drivers/usb/host/xhci-plat.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index 3d78b0c..f75764f 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -96,14 +96,18 @@ static int xhci_plat_probe(struct platform_device *pdev) return ret; } - /* Initialize dma_mask and coherent_dma_mask to 32-bits */ - ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); + /* + * Initialize dma_mask and coherent_dma_mask to valid DMA or bus + * address for the platform. + */ + ret = dma_set_coherent_mask(&pdev->dev, + DMA_BIT_MASK(sizeof(dma_addr_t)*8)); if (ret) return ret; if (!pdev->dev.dma_mask) pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask; else - dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); + dma_set_mask(&pdev->dev, DMA_BIT_MASK(sizeof(dma_addr_t)*8)); hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev)); if (!hcd) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/