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| author | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2024-10-18 17:47:50 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2024-11-11 14:20:04 -0600 |
| commit | e93d9fcfd7dc643eb5fce43053774d27bea2b263 (patch) | |
| tree | 5fdf6b1b097a165b922fd3f4f81c1dab6e062043 /drivers/pci/pci.h | |
| parent | d2bd39c0456b75be9dfc7d774b8d021355c26ae3 (diff) | |
| download | linux-e93d9fcfd7dc643eb5fce43053774d27bea2b263.tar.gz linux-e93d9fcfd7dc643eb5fce43053774d27bea2b263.tar.bz2 linux-e93d9fcfd7dc643eb5fce43053774d27bea2b263.zip | |
PCI: Refactor pcie_update_link_speed()
pcie_update_link_speed() is passed the Link Status register but not all
callers have that value at hand nor need the value.
Refactor pcie_update_link_speed() to include reading the Link Status
register and create __pcie_update_link_speed() which can be used by the
hotplug code that has the register value at hand beforehand (and needs the
value for other purposes).
Link: https://lore.kernel.org/r/20241018144755.7875-5-ilpo.jarvinen@linux.intel.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/pci/pci.h')
| -rw-r--r-- | drivers/pci/pci.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index d0a46ecf7289..8137ad2fead8 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -379,7 +379,12 @@ enum pci_bus_speed pcie_get_speed_cap(struct pci_dev *dev); enum pcie_link_width pcie_get_width_cap(struct pci_dev *dev); void __pcie_print_link_status(struct pci_dev *dev, bool verbose); void pcie_report_downtraining(struct pci_dev *dev); -void pcie_update_link_speed(struct pci_bus *bus, u16 link_status); + +static inline void __pcie_update_link_speed(struct pci_bus *bus, u16 linksta) +{ + bus->cur_bus_speed = pcie_link_speed[linksta & PCI_EXP_LNKSTA_CLS]; +} +void pcie_update_link_speed(struct pci_bus *bus); /* Single Root I/O Virtualization */ struct pci_sriov { |