+static int mlx4_pci_enable_device(struct mlx4_dev *dev)
+{
+ struct pci_dev *pdev = dev->persist->pdev;
+ int err = 0;
+
+ mutex_lock(&dev->persist->pci_status_mutex);
+ if (dev->persist->pci_status == MLX4_PCI_STATUS_DISABLED) {
+ err = pci_enable_device(pdev);
+ if (!err)
+ dev->persist->pci_status = MLX4_PCI_STATUS_ENABLED;
+ }
+ mutex_unlock(&dev->persist->pci_status_mutex);
+
+ return err;
+}
+
+static void mlx4_pci_disable_device(struct mlx4_dev *dev)
+{
+ struct pci_dev *pdev = dev->persist->pdev;
+
+ mutex_lock(&dev->persist->pci_status_mutex);
+ if (dev->persist->pci_status == MLX4_PCI_STATUS_ENABLED) {
+ pci_disable_device(pdev);
+ dev->persist->pci_status = MLX4_PCI_STATUS_DISABLED;
+ }
+ mutex_unlock(&dev->persist->pci_status_mutex);
+}
+