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PCI: Cache PCIe Device Capabilities register
authorAmey Narkhede <ameynarkhede03@gmail.com>
Tue, 17 Aug 2021 18:04:52 +0000 (23:34 +0530)
committerBjorn Helgaas <bhelgaas@google.com>
Tue, 17 Aug 2021 20:21:35 +0000 (15:21 -0500)
commite5ec7b3ab995a8d5fedbdad6d1cc1b2d5c54e26e
tree6f2589dfbded45253d70ceb92a45723a2b119982tree | snapshot
parent01da9c8979f3d24bb75ef7080a8d9915e88dff94commit | diff
PCI: Cache PCIe Device Capabilities register

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>
drivers/pci/pci.c diff | blob | history
drivers/pci/probe.c diff | blob | history
include/linux/pci.h diff | blob | history
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