PCI: Use pci_speed_string() for all PCI/PCI-X/PCIe strings
Previously some PCI speed strings came from pci_speed_string(), some came
from the PCIe-specific PCIE_SPEED2STR(), and some came from a PCIe-specific
switch statement. These methods were inconsistent:
pci_speed_string() PCIE_SPEED2STR() switch
------------------ ---------------- ------
33 MHz PCI
...
2.5 GT/s PCIe 2.5 GT/s 2.5 GT/s
5.0 GT/s PCIe 5 GT/s 5 GT/s
8.0 GT/s PCIe 8 GT/s 8 GT/s
16.0 GT/s PCIe 16 GT/s 16 GT/s
32.0 GT/s PCIe 32 GT/s 32 GT/s
Standardize on pci_speed_string() as the single source of these strings.
Note that this adds ".0" and "PCIe" to some messages, including sysfs
"max_link_speed" files, a brcmstb "link up" message, and the link status
dmesg logging, e.g.,
nvme 0000:01:00.0: 16.000 Gb/s available PCIe bandwidth, limited by 5.0 GT/s PCIe x4 link at 0000:00:01.1 (capable of 31.504 Gb/s with 8.0 GT/s PCIe x4 link)
I think it's better to standardize on a single version of the speed text.
Previously we had strings like this:
/sys/bus/pci/slots/0/cur_bus_speed: 8.0 GT/s PCIe
/sys/bus/pci/slots/0/max_bus_speed: 8.0 GT/s PCIe
/sys/devices/pci0000:00/0000:00:1c.0/current_link_speed: 8 GT/s
/sys/devices/pci0000:00/0000:00:1c.0/max_link_speed: 8 GT/s
This changes the latter two to match the slots files:
/sys/devices/pci0000:00/0000:00:1c.0/current_link_speed: 8.0 GT/s PCIe
/sys/devices/pci0000:00/0000:00:1c.0/max_link_speed: 8.0 GT/s PCIe
Based-on-patch by: Yicong Yang <yangyicong@hisilicon.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
4 files changed
