[Bug 1885030] Re: [Intel] Add Error Disconnect Recover support

** Changed in: intel
Status: Won't Fix => Fix Committed

** Tags added: intel-kernel-20.04.1

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https://bugs.launchpad.net/bugs/1885030

Title:
[Intel] Add Error Disconnect Recover support

Status in intel:
Fix Committed
Status in linux package in Ubuntu:
Incomplete
Status in linux source package in Focal:
Incomplete
Status in linux source package in Groovy:
Incomplete

Bug description:
As per the following PCIe spec ECNs, implement EDR support in Linux
kernel and upstream it.

https://members.pcisig.com/wg/PCI-SIG/document/14076

https://members.pcisig.com/wg/PCI-SIG/document/12888

Patchset (Merged 5.7 mainline):
894020fdd88c PCI/AER: Rationalize error status register clearing
ac1c8e35a326 PCI/DPC: Add Error Disconnect Recover (EDR) support
aea47413e7ce PCI/DPC: Expose dpc_process_error(), dpc_reset_link() for use by EDR
20e15e673b05 PCI/AER: Add pci_aer_raw_clear_status() to unconditionally clear Error Status
27005618178e PCI/DPC: Cache DPC capabilities in pci_init_capabilities()
e8e5ff2aeec1 PCI/ERR: Return status of pcie_do_recovery()
b6cf1a42f916 PCI/ERR: Remove service dependency in pcie_do_recovery()
be06c1b42eea PCI/DPC: Move DPC data into struct pci_dev
6d2c89441571 PCI/ERR: Update error status after reset_link()
b5dfbeacf748 PCI/ERR: Combine pci_channel_io_frozen cases

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