PCI: rockchip: Fix find_first_zero_bit() limit

[ Upstream commit 096950e230b8d83645c7cf408b9f399f58c08b96 ]

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

Link: https://lore.kernel.org/r/20220315065944.GB13572@kili
Fixes: cf590b078391 ("PCI: rockchip: Add EP driver for Rockchip 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/pcie-rockchip-ep.c b/drivers/pci/controller/pcie-rockchip-ep.c
index 5fb9ce6e536e050d003072b1d77a41e82f4cc5db..d1a200b93b2bf975f29caef425c0b8012fdaa9f1 100644 (file)
--- a/drivers/pci/controller/pcie-rockchip-ep.c
+++ b/drivers/pci/controller/pcie-rockchip-ep.c
@@ -264,8 +264,7 @@ static int rockchip_pcie_ep_map_addr(struct pci_epc *epc, u8 fn, u8 vfn,
        struct rockchip_pcie *pcie = &ep->rockchip;
        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);
        /*
         * Region 0 is reserved for configuration space and shouldn't
         * be used elsewhere per TRM, so leave it out.