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PCI: Allocate dma_alias_mask with bitmap_zalloc()

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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>
This commit is contained in:
Andy Shevchenko 2018-08-30 13:32:36 +03:00 committed by Bjorn Helgaas
parent 1ccce46c5e
commit c663579273
2 changed files with 2 additions and 3 deletions
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3
drivers/pci/pci.c
View File

@ -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;

2
drivers/pci/probe.c
View File

@ -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);
}