diff options
Diffstat (limited to 'drivers/pci/pci.c')
| -rw-r--r-- | drivers/pci/pci.c | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index cada2954ecb4..709e44e7578b 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -5301,14 +5301,16 @@ u32 pcie_bandwidth_capable(struct pci_dev *dev, enum pci_bus_speed *speed, } /** - * pcie_print_link_status - Report the PCI device's link speed and width + * __pcie_print_link_status - Report the PCI device's link speed and width * @dev: PCI device to query + * @verbose: Print info even when enough bandwidth is available * - * Report the available bandwidth at the device. If this is less than the - * device is capable of, report the device's maximum possible bandwidth and - * the upstream link that limits its performance to less than that. + * If the available bandwidth at the device is less than the device is + * capable of, report the device's maximum possible bandwidth and the + * upstream link that limits its performance. If @verbose, always print + * the available bandwidth, even if the device isn't constrained. */ -void pcie_print_link_status(struct pci_dev *dev) +void __pcie_print_link_status(struct pci_dev *dev, bool verbose) { enum pcie_link_width width, width_cap; enum pci_bus_speed speed, speed_cap; @@ -5318,11 +5320,11 @@ void pcie_print_link_status(struct pci_dev *dev) bw_cap = pcie_bandwidth_capable(dev, &speed_cap, &width_cap); bw_avail = pcie_bandwidth_available(dev, &limiting_dev, &speed, &width); - if (bw_avail >= bw_cap) + if (bw_avail >= bw_cap && verbose) pci_info(dev, "%u.%03u Gb/s available PCIe bandwidth (%s x%d link)\n", bw_cap / 1000, bw_cap % 1000, PCIE_SPEED2STR(speed_cap), width_cap); - else + else if (bw_avail < bw_cap) pci_info(dev, "%u.%03u Gb/s available PCIe bandwidth, limited by %s x%d link at %s (capable of %u.%03u Gb/s with %s x%d link)\n", bw_avail / 1000, bw_avail % 1000, PCIE_SPEED2STR(speed), width, @@ -5330,6 +5332,17 @@ void pcie_print_link_status(struct pci_dev *dev) bw_cap / 1000, bw_cap % 1000, PCIE_SPEED2STR(speed_cap), width_cap); } + +/** + * pcie_print_link_status - Report the PCI device's link speed and width + * @dev: PCI device to query + * + * Report the available bandwidth at the device. + */ +void pcie_print_link_status(struct pci_dev *dev) +{ + __pcie_print_link_status(dev, true); +} EXPORT_SYMBOL(pcie_print_link_status); /** |