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PCI: Introduce pci_resource_n()

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Introduce pci_resource_n() and replace open-coded implementations of it
in pci.h.

Link: https://lore.kernel.org/r/20230330162434.35055-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
This commit is contained in:
Andy Shevchenko 2023-03-30 19:24:29 +03:00 committed by Bjorn Helgaas
parent fe15c26ee2
commit 144d204df7
1 changed files with 7 additions and 8 deletions
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15
include/linux/pci.h
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@ -1994,14 +1994,13 @@ int pci_iobar_pfn(struct pci_dev *pdev, int bar, struct vm_area_struct *vma);
* These helpers provide future and backwards compatibility
* for accessing popular PCI BAR info
*/
#define pci_resource_start(dev, bar) ((dev)->resource[(bar)].start)
#define pci_resource_end(dev, bar) ((dev)->resource[(bar)].end)
#define pci_resource_flags(dev, bar) ((dev)->resource[(bar)].flags)
#define pci_resource_len(dev,bar) \
((pci_resource_end((dev), (bar)) == 0) ? 0 : \
\
(pci_resource_end((dev), (bar)) - \
pci_resource_start((dev), (bar)) + 1))
#define pci_resource_n(dev, bar) (&(dev)->resource[(bar)])
#define pci_resource_start(dev, bar) (pci_resource_n(dev, bar)->start)
#define pci_resource_end(dev, bar) (pci_resource_n(dev, bar)->end)
#define pci_resource_flags(dev, bar) (pci_resource_n(dev, bar)->flags)
#define pci_resource_len(dev,bar) \
(pci_resource_end((dev), (bar)) ? \
resource_size(pci_resource_n((dev), (bar))) : 0)
/*
* Similar to the helpers above, these manipulate per-pci_dev