diff options
| -rw-r--r-- | drivers/pci/controller/pcie-rockchip-ep.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/pci/controller/pcie-rockchip-ep.c b/drivers/pci/controller/pcie-rockchip-ep.c index b4db5459727f..24ee1df17a49 100644 --- a/drivers/pci/controller/pcie-rockchip-ep.c +++ b/drivers/pci/controller/pcie-rockchip-ep.c @@ -246,6 +246,9 @@ static int rockchip_pcie_ep_map_addr(struct pci_epc *epc, u8 fn, u8 vfn, struct rockchip_pcie *pcie = &ep->rockchip; u32 r = rockchip_ob_region(addr); + if (test_bit(r, &ep->ob_region_map)) + return -EBUSY; + rockchip_pcie_prog_ep_ob_atu(pcie, fn, r, addr, pci_addr, size); set_bit(r, &ep->ob_region_map); |