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PCI: Add public pcie_valid_speed() for shared validation

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Extract the PCIe speed validation logic from bwctrl.c's static
pcie_valid_speed() into a public static inline function in pci.h.

This allows consistent speed range checks (2.5GT/s to 64.0GT/s) across
multiple drivers and functions, avoiding duplicate code and ensuring
validation consistency as per PCIe specifications.

Signed-off-by: Hans Zhang <18255117159@163.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20260407130450.1489318-2-18255117159@163.com
This commit is contained in:
Hans Zhang 2026-04-07 21:04:48 +08:00 committed by Manivannan Sadhasivam
parent dc59e4fea9
commit e1c1eb1d89
2 changed files with 5 additions and 5 deletions
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5
drivers/pci/pci.h
View File

@ -599,6 +599,11 @@ void pci_bus_put(struct pci_bus *bus);
(speed) == PCIE_SPEED_2_5GT ? 2500*8/10 : \
0)
static inline bool pcie_valid_speed(enum pci_bus_speed speed)
{
return (speed >= PCIE_SPEED_2_5GT) && (speed <= PCIE_SPEED_64_0GT);
}
static inline int pcie_dev_speed_mbps(enum pci_bus_speed speed)
{
switch (speed) {

5
drivers/pci/pcie/bwctrl.c
View File

@ -48,11 +48,6 @@ struct pcie_bwctrl_data {
/* Prevent port removal during Link Speed changes. */
static DECLARE_RWSEM(pcie_bwctrl_setspeed_rwsem);
static bool pcie_valid_speed(enum pci_bus_speed speed)
{
return (speed >= PCIE_SPEED_2_5GT) && (speed <= PCIE_SPEED_64_0GT);
}
static u16 pci_bus_speed2lnkctl2(enum pci_bus_speed speed)
{
static const u8 speed_conv[] = {