Merge tag 'sunxi-fixes-for-4.3' of https://git.kernel.org/pub/scm/linux/kernel/git...

[linux-drm-fsl-dcu.git] / drivers / misc / cxl / vphb.c

diff --git a/drivers/misc/cxl/vphb.c b/drivers/misc/cxl/vphb.c
index 6dd16a6d153f0e55f0f4f7d122b4b27012a3b329..94b520896b18350fdf3c7d59c5789718bc75a58e 100644 (file)
--- a/drivers/misc/cxl/vphb.c
+++ b/drivers/misc/cxl/vphb.c
@@ -48,6 +48,12 @@ static bool cxl_pci_enable_device_hook(struct pci_dev *dev)
 
        phb = pci_bus_to_host(dev->bus);
        afu = (struct cxl_afu *)phb->private_data;
+
+       if (!cxl_adapter_link_ok(afu->adapter)) {
+               dev_warn(&dev->dev, "%s: Device link is down, refusing to enable AFU\n", __func__);
+               return false;
+       }
+
        set_dma_ops(&dev->dev, &dma_direct_ops);
        set_dma_offset(&dev->dev, PAGE_OFFSET);