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PCI: cadence: Fix find_first_zero_bit() limit

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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: 37dddf14f1 ("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>
This commit is contained in:
Dan Carpenter 2022-03-15 09:58:29 +03:00 committed by Lorenzo Pieralisi
parent 3123109284
commit 0aa3a0937f
1 changed files with 1 additions and 2 deletions
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3
drivers/pci/controller/cadence/pcie-cadence-ep.c
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@ -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; struct cdns_pcie *pcie = &ep->pcie;
u32 r; u32 r;
r = find_first_zero_bit(&ep->ob_region_map, r = find_first_zero_bit(&ep->ob_region_map, BITS_PER_LONG);
sizeof(ep->ob_region_map) * BITS_PER_LONG);
if (r >= ep->max_regions - 1) { if (r >= ep->max_regions - 1) {
dev_err(&epc->dev, "no free outbound region\n"); dev_err(&epc->dev, "no free outbound region\n");
return -EINVAL; return -EINVAL;