PCI/PTM: Cache PTM Capability offset

Mark Pearsonrequested to merge
(removed):fedora-6.0 into fedora-6.0

This is a sequence of patches from the pci maintainer branch that address a PCI error seen when thunderbolt is enabled on the P1 and P16 systems that have an Nvidia card. https://lore.kernel.org/lkml/20220909202505.314195-1-helgaas@kernel.org/

Thanks

Mark

Cache the PTM Capability offset instead of searching for it every time we enable/disable PTM or save/restore PTM state. No functional change intended.

Link: https://lore.kernel.org/r/20220909202505.314195-2-helgaas@kernel.org Tested-by: Rajvi Jingar rajvi.jingar@linux.intel.com Signed-off-by: Bjorn Helgaas bhelgaas@google.com Reviewed-by: Kuppuswamy Sathyanarayanan sathyanarayanan.kuppuswamy@linux.intel.com Reviewed-by: Mika Westerberg mika.westerberg@linux.intel.com

Upstream Status: helgaas/pci.git (cherry picked from commit a47126ec)

Needed to address PCI errors seen on boot on P1G5 and P16 Signed-off-by: Mark Pearson mpearson@lenovo.com

Edited by Mark Pearson

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