PCI: Cache PCIe Device Capabilities register

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Add a new member called devcap in struct pci_dev for caching the PCIe
Device Capabilities register to avoid reading PCI_EXP_DEVCAP multiple
times.

Refactor pcie_has_flr() to use cached device capabilities.

Link: https://lore.kernel.org/r/20210817180500.1253-2-ameynarkhede03@gmail.com
Signed-off-by: Amey Narkhede <ameynarkhede03@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Raphael Norwitz <raphael.norwitz@nutanix.com>

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Amey Narkhede 2021-08-17 23:34:52 +05:30 • committed by Bjorn Helgaas

parent e73f0f0ee7

commit 6913924480

3 changed files with 6 additions and 6 deletions

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6

drivers/pci/pci.c

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5

drivers/pci/probe.c

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1

include/linux/pci.h

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