radeon: Test for PCI root bus before assuming bus->self

[firefly-linux-kernel-4.4.55.git] / drivers / gpu / drm / radeon / si.c

diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index 739e0a5349f8dcaf8a47203c4fc23a47217e2b10..6bce40847753b822f50be6037654c863833af068 100644 (file)
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -7188,6 +7188,9 @@ static void si_pcie_gen3_enable(struct radeon_device *rdev)
        int ret, i;
        u16 tmp16;
 
+       if (pci_is_root_bus(rdev->pdev->bus))
+               return;
+
        if (radeon_pcie_gen2 == 0)
                return;
 
@@ -7465,7 +7468,8 @@ static void si_program_aspm(struct radeon_device *rdev)
                        if (orig != data)
                                WREG32_PIF_PHY1(PB1_PIF_CNTL, data);
 
-                       if (!disable_clkreq) {
+                       if (!disable_clkreq &&
+                           !pci_is_root_bus(rdev->pdev->bus)) {
                                struct pci_dev *root = rdev->pdev->bus->self;
                                u32 lnkcap;