The number of possible devfns is 256 so the size of the bitmap for
allocations should be U8_MAX+1.
Signed-off-by: James Sewart <jamessewart@xxxxxxxxxx>
---
drivers/pci/pci.c | 2 +-
drivers/pci/search.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index a97e2571a527..0a4449a30ace 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -5876,7 +5876,7 @@ int pci_set_vga_state(struct pci_dev *dev, bool decode,
void pci_add_dma_alias(struct pci_dev *dev, u8 devfn)
{
if (!dev->dma_alias_mask)
- dev->dma_alias_mask = bitmap_zalloc(U8_MAX, GFP_KERNEL);
+ dev->dma_alias_mask = bitmap_zalloc(U8_MAX+1, GFP_KERNEL);
if (!dev->dma_alias_mask) {
pci_warn(dev, "Unable to allocate DMA alias mask\n");
return;
diff --git a/drivers/pci/search.c b/drivers/pci/search.c
index bade14002fd8..b3633af1743b 100644
--- a/drivers/pci/search.c
+++ b/drivers/pci/search.c
@@ -43,7 +43,7 @@ int pci_for_each_dma_alias(struct pci_dev *pdev,
if (unlikely(pdev->dma_alias_mask)) {
u8 devfn;
- for_each_set_bit(devfn, pdev->dma_alias_mask, U8_MAX) {
+ for_each_set_bit(devfn, pdev->dma_alias_mask, U8_MAX+1) {
ret = fn(pdev, PCI_DEVID(pdev->bus->number, devfn),
data);
if (ret)
--
2.24.0
