From: Stanislav Spassov <stanspas@xxxxxxxxx> Enable the global maximum polling time to be configured on the kernel command line, and make per-device overrides possible. This allows the default timeout to be lowered while accomodating devices that require more time to finish initialization after a reset. When Configuration Request Retry Status Software Visibility is enabled on the parent PCIe Root Port, it is better to poll the PCI_VENDOR_ID register to get the special CRS behavior specified in the PCI Express Base Specification. Polling a different register can result in system crashes due to core timeouts when the Root Port autonomously keeps retrying the Configuration Read without reporting back to the CPU. Wei Wang (1): PCI: Make PCIE_RESET_READY_POLL_MS configurable Stanislav Spassov (2): PCI: Introduce per-device reset_ready_poll override PCI: Add CRS handling to pci_dev_wait() .../admin-guide/kernel-parameters.txt | 5 + drivers/pci/pci.c | 157 +++++++++++++++--- drivers/pci/probe.c | 2 + include/linux/pci.h | 1 + 4 files changed, 138 insertions(+), 27 deletions(-) base-commit: bb6d3fb354c5ee8d6bde2d576eb7220ea09862b9 -- 2.25.1 Amazon Development Center Germany GmbH Krausenstr. 38 10117 Berlin Geschaeftsfuehrung: Christian Schlaeger, Jonathan Weiss Eingetragen am Amtsgericht Charlottenburg unter HRB 149173 B Sitz: Berlin Ust-ID: DE 289 237 879
