On Mon, Oct 07, 2024 at 01:12:10PM +0900, Damien Le Moal wrote: > Add a check to verify that the outbound region to be used for mapping an > address is not already in use. > > Signed-off-by: Damien Le Moal <dlemoal@xxxxxxxxxx> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx> - Mani > --- > drivers/pci/controller/pcie-rockchip-ep.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/pci/controller/pcie-rockchip-ep.c b/drivers/pci/controller/pcie-rockchip-ep.c > index 89ebdf3e4737..edb84fb1ba39 100644 > --- a/drivers/pci/controller/pcie-rockchip-ep.c > +++ b/drivers/pci/controller/pcie-rockchip-ep.c > @@ -243,6 +243,9 @@ 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); > -- > 2.46.2 > -- மணிவண்ணன் சதாசிவம்
