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Message-ID: <50D6039D.4000001@linux.vnet.ibm.com> Date: Sat, 22 Dec 2012 17:01:49 -0200 From: Lucas Kannebley Tavares <lucaskt@...ux.vnet.ibm.com> To: Bjorn Helgaas <bhelgaas@...gle.com> CC: dri-devel@...ts.freedesktop.org, David Airlie <airlied@...ux.ie>, linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org, brking@...ux.vnet.ibm.com, benh@....ibm.com, Betty Dall <betty.dall@...com>, Thadeu Lima de Souza Cascardo <cascardo@...ux.vnet.ibm.com> Subject: [PATCH] drm: fixed access to PCI host bridges 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 <lucaskt@...ux.vnet.ibm.com> --- 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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