PCI: Allocate dma_alias_mask with bitmap_zalloc()

Switch to bitmap_zalloc() to show clearly what we are allocating.  Besides
that it returns pointer of bitmap type ("unsigned long *") instead of the
opaque "void *".

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 1835f3a..dc3313d 100644 (file)
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -5690,8 +5690,7 @@ 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 = kcalloc(BITS_TO_LONGS(U8_MAX),
-                                             sizeof(long), GFP_KERNEL);
+               dev->dma_alias_mask = bitmap_zalloc(U8_MAX, GFP_KERNEL);
        if (!dev->dma_alias_mask) {
                pci_warn(dev, "Unable to allocate DMA alias mask\n");
                return;

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 201f9e5..7c422cc 100644 (file)
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -2143,7 +2143,7 @@ static void pci_release_dev(struct device *dev)
        pcibios_release_device(pci_dev);
        pci_bus_put(pci_dev->bus);
        kfree(pci_dev->driver_override);
-       kfree(pci_dev->dma_alias_mask);
+       bitmap_free(pci_dev->dma_alias_mask);
        kfree(pci_dev);
 }