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@linux.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;