From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e24smtp03.br.ibm.com ([32.104.18.24]:40538 "EHLO e24smtp03.br.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751946Ab2LVTCI (ORCPT ); Sat, 22 Dec 2012 14:02:08 -0500 Received: from /spool/local by e24smtp03.br.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Sat, 22 Dec 2012 17:02:07 -0200 Message-ID: <50D6039D.4000001@linux.vnet.ibm.com> Date: Sat, 22 Dec 2012 17:01:49 -0200 From: Lucas Kannebley Tavares MIME-Version: 1.0 To: Bjorn Helgaas CC: dri-devel@lists.freedesktop.org, David Airlie , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, brking@linux.vnet.ibm.com, benh@au1.ibm.com, Betty Dall , Thadeu Lima de Souza Cascardo Subject: [PATCH] drm: fixed access to PCI host bridges References: <50CA5EE2.30206@linux.vnet.ibm.com> <50D60349.7080400@linux.vnet.ibm.com> In-Reply-To: <50D60349.7080400@linux.vnet.ibm.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: linux-pci-owner@vger.kernel.org List-ID: During the process of obtaining the speed cap for the device, it attempts go get the PCI Host bus. However on architectures such as PPC or IA64, those do not appear as devices. Signed-off-by: Lucas Kannebley Tavares --- drivers/gpu/drm/drm_pci.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/drivers/gpu/drm/drm_pci.c b/drivers/gpu/drm/drm_pci.c index 754bc96..ea41234 100644 --- a/drivers/gpu/drm/drm_pci.c +++ b/drivers/gpu/drm/drm_pci.c @@ -479,8 +479,13 @@ int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *mask) if (!pci_is_pcie(dev->pdev)) return -EINVAL; + // find PCI device for capabilities root = dev->pdev->bus->self; + // some architectures might not have host bridges as PCI devices + if (root == NULL) + root = dev->pdev; + pos = pci_pcie_cap(root); if (!pos) return -EINVAL; -- Lucas Kannebley Tavares Software Engineer IBM Linux Technology Center