Re: [PATCH v3 1/5] PCI: Use pcie_get_link_speed() in pci.c

[Ilpo Järvinen]

On Thu, 12 Nov 2026, Hans Zhang wrote:

> Replace the to_pcie_link_speed() wrapper with pcie_get_link_speed() in
> pcie_link_bandwidth_mbps() and pcie_bandwidth_available(), and remove
> the now-unused wrapper.  pcie_get_link_speed() performs the same lookup

now unused

I suppose Bjorn can take care of that while applying so no need to send 
another version because of this alone.

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>

-- 
 i.

> with bounds checking and is already exported.
> 
> Signed-off-by: Hans Zhang <18255117159@xxxxxxx>
> ---
>  drivers/pci/pci.c | 15 ++++++---------
>  1 file changed, 6 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
> index 7c6f2aba8144..594ee7aa4cad 100644
> --- a/drivers/pci/pci.c
> +++ b/drivers/pci/pci.c
> @@ -6025,11 +6025,6 @@ int pcie_set_mps(struct pci_dev *dev, int mps)
>  }
>  EXPORT_SYMBOL(pcie_set_mps);
>  
> -static enum pci_bus_speed to_pcie_link_speed(u16 lnksta)
> -{
> -	return pcie_link_speed[FIELD_GET(PCI_EXP_LNKSTA_CLS, lnksta)];
> -}
> -
>  /**
>   * pcie_link_bandwidth_mbps - get the current bandwidth of a single PCIe link
>   * @pdev: PCI device to query
> @@ -6041,14 +6036,15 @@ static enum pci_bus_speed to_pcie_link_speed(u16 lnksta)
>   */
>  int pcie_link_bandwidth_mbps(struct pci_dev *pdev)
>  {
> -	u16 lnksta;
> +	u16 lnksta, lnksta_cls;
>  	int speed, err;
>  
>  	err = pcie_capability_read_word(pdev, PCI_EXP_LNKSTA, &lnksta);
>  	if (err)
>  		return pcibios_err_to_errno(err);
>  
> -	speed = pcie_dev_speed_mbps(to_pcie_link_speed(lnksta));
> +	lnksta_cls = FIELD_GET(PCI_EXP_LNKSTA_CLS, lnksta);
> +	speed = pcie_dev_speed_mbps(pcie_get_link_speed(lnksta_cls));
>  	if (speed < 0)
>  		return speed;
>  
> @@ -6074,7 +6070,7 @@ u32 pcie_bandwidth_available(struct pci_dev *dev, struct pci_dev **limiting_dev,
>  			     enum pci_bus_speed *speed,
>  			     enum pcie_link_width *width)
>  {
> -	u16 lnksta;
> +	u16 lnksta, lnksta_cls;
>  	enum pci_bus_speed next_speed;
>  	enum pcie_link_width next_width;
>  	u32 bw, next_bw;
> @@ -6089,7 +6085,8 @@ u32 pcie_bandwidth_available(struct pci_dev *dev, struct pci_dev **limiting_dev,
>  	while (dev) {
>  		pcie_capability_read_word(dev, PCI_EXP_LNKSTA, &lnksta);
>  
> -		next_speed = to_pcie_link_speed(lnksta);
> +		lnksta_cls = FIELD_GET(PCI_EXP_LNKSTA_CLS, lnksta);
> +		next_speed = pcie_get_link_speed(lnksta_cls);
>  		next_width = FIELD_GET(PCI_EXP_LNKSTA_NLW, lnksta);
>  
>  		next_bw = next_width * PCIE_SPEED2MBS_ENC(next_speed);
>