pci_is_thunderbolt_attached() looks at the hierarchy of the PCIe device to determine if any bridge along the way has the is_thunderbolt bit set. This bit will only be set when one of the devices in the hierarchy is an Intel Thunderbolt device. However PCIe devices can be connected to USB4 hubs and routers which won't necessarily set the is_thunderbolt bit. These devices will however be marked as externally facing which means they are marked removable by pci_set_removable(). Look whether the device is marked removable to determine it's connected to a Thunderbolt controller or USB4 router. Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx> --- v2->v3: * Update commit message --- drivers/gpu/drm/nouveau/nouveau_vga.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_vga.c b/drivers/gpu/drm/nouveau/nouveau_vga.c index f8bf0ec26844..14215b7ca187 100644 --- a/drivers/gpu/drm/nouveau/nouveau_vga.c +++ b/drivers/gpu/drm/nouveau/nouveau_vga.c @@ -94,8 +94,8 @@ nouveau_vga_init(struct nouveau_drm *drm) vga_client_register(pdev, nouveau_vga_set_decode); - /* don't register Thunderbolt eGPU with vga_switcheroo */ - if (pci_is_thunderbolt_attached(pdev)) + /* don't register USB4/Thunderbolt eGPU with vga_switcheroo */ + if (dev_is_removable(&pdev->dev)) return; vga_switcheroo_register_client(pdev, &nouveau_switcheroo_ops, runtime); @@ -118,7 +118,7 @@ nouveau_vga_fini(struct nouveau_drm *drm) vga_client_unregister(pdev); - if (pci_is_thunderbolt_attached(pdev)) + if (dev_is_removable(&pdev->dev)) return; vga_switcheroo_unregister_client(pdev); -- 2.34.1
