1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/os/linux/pci.c b/drivers/gpu/nvgpu/os/linux/pci.c
index 2e456abc..61e412f2 100644
--- a/drivers/gpu/nvgpu/os/linux/pci.c
+++ b/drivers/gpu/nvgpu/os/linux/pci.c
@@ -536,6 +536,13 @@ static int nvgpu_pci_init_support(struct pci_dev *pdev)
                 goto fail;
         }
 
+        l->regs_bus_addr = pci_resource_start(pdev, 0);
+        if (!l->regs_bus_addr) {
+                nvgpu_err(g, "failed to read register bus offset");
+                err = -ENODEV;
+                goto fail;
+        }
+
         l->bar1 = nvgpu_devm_ioremap(dev, pci_resource_start(pdev, 1),
                                      pci_resource_len(pdev, 1));
         if (IS_ERR(l->bar1)) {