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    Subject[PATCH 5.17 459/772] PCI: cadence: Fix find_first_zero_bit() limit
    Date
    From: Dan Carpenter <dan.carpenter@oracle.com>

    [ 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>
    ---
    drivers/pci/controller/cadence/pcie-cadence-ep.c | 3 +--
    1 file changed, 1 insertion(+), 2 deletions(-)

    diff --git a/drivers/pci/controller/cadence/pcie-cadence-ep.c b/drivers/pci/controller/cadence/pcie-cadence-ep.c
    index 4b1c4bc4e003..b8b655d4047e 100644
    --- 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;
    --
    2.35.1


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