Re: [PATCH] PCI: tegra: Use generic accessors where possible

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[+cc vidya]

On Fri, Sep 22, 2017 at 11:18:41PM -0700, Thierry Reding wrote:
> The Tegra PCI host controller can generate configuration space accesses
> with byte, word and dword granularity for devices. Only root ports can't
> have their configuration space accessed in this way.
> 
> Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>

Applied to pci/host-tegra for v4.15, thanks!

> ---
>  drivers/pci/host/pci-tegra.c | 24 ++++++++++++++++++++++--
>  1 file changed, 22 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/host/pci-tegra.c
> index 9c40da54f88a..e8e1ddbaabc9 100644
> --- a/drivers/pci/host/pci-tegra.c
> +++ b/drivers/pci/host/pci-tegra.c
> @@ -491,12 +491,32 @@ static void __iomem *tegra_pcie_map_bus(struct pci_bus *bus,
>  	return addr;
>  }
>  
> +static int tegra_pcie_config_read(struct pci_bus *bus, unsigned int devfn,
> +				  int where, int size, u32 *value)
> +{
> +	if (bus->number == 0)
> +		return pci_generic_config_read32(bus, devfn, where, size,
> +						 value);
> +
> +	return pci_generic_config_read(bus, devfn, where, size, value);
> +}
> +
> +static int tegra_pcie_config_write(struct pci_bus *bus, unsigned int devfn,
> +				   int where, int size, u32 value)
> +{
> +	if (bus->number == 0)
> +		return pci_generic_config_write32(bus, devfn, where, size,
> +						  value);
> +
> +	return pci_generic_config_write(bus, devfn, where, size, value);
> +}
> +
>  static struct pci_ops tegra_pcie_ops = {
>  	.add_bus = tegra_pcie_add_bus,
>  	.remove_bus = tegra_pcie_remove_bus,
>  	.map_bus = tegra_pcie_map_bus,
> -	.read = pci_generic_config_read32,
> -	.write = pci_generic_config_write32,
> +	.read = tegra_pcie_config_read,
> +	.write = tegra_pcie_config_write,
>  };
>  
>  static unsigned long tegra_pcie_port_get_pex_ctrl(struct tegra_pcie_port *port)
> -- 
> 2.14.1
> 
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