commit dd66cc2e1 "drm/pci: Use PCI Express Capability accessors"
introduced the use of the pcie_capability_read_dword function
in the drm_pci code, which is only defined when PCI is enabled.
While most of the file is already hidden away behind an #ifdef
CONFIG_PCI, this function is not, and that now causes a link
error in the ARM imx_v6_v7_defconfig configuration.
Moving the function into the #ifdef section makes this work
again on IMX, which does not have PCI support, and should
have no impact on platforms that do.
Signed-off-by: Arnd Bergmann <a...@arndb.de>
Cc: Bjorn Helgaas <bhelg...@google.com>
Cc: Dave Airlie <airl...@redhat.com>
---
drivers/gpu/drm/drm_pci.c | 75 +++++++++++++++++++++++------------------------
1 file changed, 37 insertions(+), 38 deletions(-)
diff --git a/drivers/gpu/drm/drm_pci.c b/drivers/gpu/drm/drm_pci.c
index 86102a0..9c408e0 100644
--- a/drivers/gpu/drm/drm_pci.c
+++ b/drivers/gpu/drm/drm_pci.c
@@ -388,6 +388,43 @@ err_g1:
}
EXPORT_SYMBOL(drm_get_pci_dev);
+int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *mask)
+{
+ struct pci_dev *root;
+ u32 lnkcap, lnkcap2;
+
+ *mask = 0;
+ if (!dev->pdev)
+ return -EINVAL;
+
+ root = dev->pdev->bus->self;
+
+ /* we've been informed via and serverworks don't make the cut */
+ if (root->vendor == PCI_VENDOR_ID_VIA ||
+ root->vendor == PCI_VENDOR_ID_SERVERWORKS)
+ return -EINVAL;
+
+ pcie_capability_read_dword(root, PCI_EXP_LNKCAP, &lnkcap);
+ pcie_capability_read_dword(root, PCI_EXP_LNKCAP2, &lnkcap2);
+
+ if (lnkcap2) { /* PCIe r3.0-compliant */
+ if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_2_5GB)
+ *mask |= DRM_PCIE_SPEED_25;
+ if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_5_0GB)
+ *mask |= DRM_PCIE_SPEED_50;
+ if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_8_0GB)
+ *mask |= DRM_PCIE_SPEED_80;
+ } else { /* pre-r3.0 */
+ 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_25 | DRM_PCIE_SPEED_50);
+ }
+
+ DRM_INFO("probing gen 2 caps for device %x:%x = %x/%x\n", root->vendor,
root->device, lnkcap, lnkcap2);
+ return 0;
+}
+EXPORT_SYMBOL(drm_pcie_get_speed_cap_mask);
/**
* PCI device initialization. Called direct from modules at load time.
*
@@ -465,41 +502,3 @@ void drm_pci_exit(struct drm_driver *driver, struct
pci_driver *pdriver)
DRM_INFO("Module unloaded\n");
}
EXPORT_SYMBOL(drm_pci_exit);
-
-int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *mask)
-{
- struct pci_dev *root;
- u32 lnkcap, lnkcap2;
-
- *mask = 0;
- if (!dev->pdev)
- return -EINVAL;
-
- root = dev->pdev->bus->self;
-
- /* we've been informed via and serverworks don't make the cut */
- if (root->vendor == PCI_VENDOR_ID_VIA ||
- root->vendor == PCI_VENDOR_ID_SERVERWORKS)
- return -EINVAL;
-
- pcie_capability_read_dword(root, PCI_EXP_LNKCAP, &lnkcap);
- pcie_capability_read_dword(root, PCI_EXP_LNKCAP2, &lnkcap2);
-
- if (lnkcap2) { /* PCIe r3.0-compliant */
- if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_2_5GB)
- *mask |= DRM_PCIE_SPEED_25;
- if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_5_0GB)
- *mask |= DRM_PCIE_SPEED_50;
- if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_8_0GB)
- *mask |= DRM_PCIE_SPEED_80;
- } else { /* pre-r3.0 */
- 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_25 | DRM_PCIE_SPEED_50);
- }
-
- DRM_INFO("probing gen 2 caps for device %x:%x = %x/%x\n", root->vendor,
root->device, lnkcap, lnkcap2);
- return 0;
-}
-EXPORT_SYMBOL(drm_pcie_get_speed_cap_mask);
--
1.8.1.2
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