Merge branch 'pci/aer'

Merge branch 'pci/aer'

- Initialize struct aer_err_info before using it to avoid depending on
  stack garbage (Bjorn Helgaas)

- Log the DPC Error Source ID only when it's actually valid (when ERR_FATAL
  or ERR_NONFATAL was received from a downstream device) and decode into
  bus/device/function (Bjorn Helgaas)

- Consolidate AER Error Source ID in one place for message consistency
  (Bjorn Helgaas)

- Update statistics and emit trace events early in AER logging paths,
  before any potential ratelimiting (Bjorn Helgaas)

- Determine AER log level once and save it so all related messages use the
  same level (Karolina Stolarek)

- Use KERN_WARNING, not KERN_ERR, when logging PCIe Correctable Errors.

- Ratelimit PCIe Correctable and Non-Fatal error logging, with sysfs
  controls on interval and burst count, to avoid flooding logs and RCU
  stall warnings (Jon Pan-Doh)

* pci/aer:
  PCI/ERR: Remove misleading TODO regarding kernel panic
  PCI/AER: Add sysfs attributes for log ratelimits
  PCI/AER: Add ratelimits to PCI AER Documentation
  PCI/AER: Ratelimit correctable and non-fatal error logging
  PCI/AER: Simplify add_error_device()
  PCI/AER: Convert aer_get_device_error_info(), aer_print_error() to index
  PCI/AER: Rename struct aer_stats to aer_info
  PCI/AER: Reduce pci_print_aer() correctable error level to KERN_WARNING
  PCI/ERR: Add printk level to pcie_print_tlp_log()
  PCI/AER: Check log level once and remember it
  PCI/AER: Trace error event before ratelimiting
  PCI/AER: Update statistics before ratelimiting
  PCI/AER: Simplify pci_print_aer()
  PCI/AER: Initialize aer_err_info before using it
  PCI/AER: Move aer_print_source() earlier in file
  PCI/AER: Rename aer_print_port_info() to aer_print_source()
  PCI/AER: Extract bus/dev/fn in aer_print_port_info() with PCI_BUS_NUM(), etc
  PCI/AER: Consolidate Error Source ID logging in aer_isr_one_error_type()
  PCI/AER: Factor COR/UNCOR error handling out from aer_isr_one_error()
  PCI/DPC: Log Error Source ID only when valid
  PCI/DPC: Initialize aer_err_info before using it