| Message ID | 20130104191037.4586.96280.stgit@bhelgaas.mtv.corp.google.com (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
diff --git a/drivers/gpu/drm/drm_pci.c b/drivers/gpu/drm/drm_pci.c index 11c8add..50e26f2 100644 --- a/drivers/gpu/drm/drm_pci.c +++ b/drivers/gpu/drm/drm_pci.c @@ -507,7 +507,7 @@ int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *mask) if (lnkcap & PCI_EXP_LNKCAP_SLS_2_5GB) *mask |= DRM_PCIE_SPEED_25; if (lnkcap & PCI_EXP_LNKCAP_SLS_5_0GB) - *mask |= DRM_PCIE_SPEED_50; + *mask |= (DRM_PCIE_SPEED_25 | DRM_PCIE_SPEED_50); } DRM_INFO("probing gen 2 caps for device %x:%x = %x/%x\n", root->vendor, root->device, lnkcap, lnkcap2);
For devices that conform to PCIe r3.0 and have a Link Capabilities 2 register, we test and report every bit in the Supported Link Speeds Vector field. For a device that supports both 2.5GT/s and 5.0GT/s, we set both DRM_PCIE_SPEED_25 and DRM_PCIE_SPEED_50 in the returned mask. For pre-r3.0 devices, the Link Capabilities 0010b encoding (PCI_EXP_LNKCAP_SLS_5_0GB) means that both 5.0GT/s and 2.5GT/s are supported, so set both DRM_PCIE_SPEED_25 and DRM_PCIE_SPEED_50 in this case as well. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> --- drivers/gpu/drm/drm_pci.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html