PCI: cadence: Fix find_first_zero_bit() limit

[ Upstream commit 0aa3a0937feeb91a0e4e438c3c063b749b194192 ]

The ep->ob_region_map bitmap is a long and it has BITS_PER_LONG bits.

Link: https://lore.kernel.org/r/20220315065829.GA13572@kili
Fixes: 37dddf14f1ae ("PCI: cadence: Add EndPoint Controller driver for Cadence PCIe controller")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/pci/controller/cadence/pcie-cadence-ep.c b/drivers/pci/controller/cadence/pcie-cadence-ep.c
index 88e05b9..18e32b8 100644 (file)
--- a/drivers/pci/controller/cadence/pcie-cadence-ep.c
+++ b/drivers/pci/controller/cadence/pcie-cadence-ep.c
@@ -187,8 +187,7 @@ static int cdns_pcie_ep_map_addr(struct pci_epc *epc, u8 fn, u8 vfn,
        struct cdns_pcie *pcie = &ep->pcie;
        u32 r;
 
-       r = find_first_zero_bit(&ep->ob_region_map,
-                               sizeof(ep->ob_region_map) * BITS_PER_LONG);
+       r = find_first_zero_bit(&ep->ob_region_map, BITS_PER_LONG);
        if (r >= ep->max_regions - 1) {
                dev_err(&epc->dev, "no free outbound region\n");
                return -EINVAL;