On Monday 27 April 2009, Alan Stern wrote:
> This patch (as1235) adds an array of PCI power-state names, together
> with a simple inline accessor routine.
Good idea. :-)
Acked-by: Rafael J. Wysocki <rjw@xxxxxxx>
> Signed-off-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
> CC: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
>
> ---
>
> Index: usb-2.6/drivers/pci/pci.c
> ===================================================================
> --- usb-2.6.orig/drivers/pci/pci.c
> +++ usb-2.6/drivers/pci/pci.c
> @@ -24,6 +24,11 @@
> #include <asm/setup.h>
> #include "pci.h"
>
> +const char *pci_power_names[] = {
> + "error", "D0", "D1", "D2", "D3hot", "D3cold", "unknown",
> +};
> +EXPORT_SYMBOL_GPL(pci_power_names);
> +
> unsigned int pci_pm_d3_delay = PCI_PM_D3_WAIT;
>
> #ifdef CONFIG_PCI_DOMAINS
> Index: usb-2.6/include/linux/pci.h
> ===================================================================
> --- usb-2.6.orig/include/linux/pci.h
> +++ usb-2.6/include/linux/pci.h
> @@ -124,6 +124,14 @@ typedef int __bitwise pci_power_t;
> #define PCI_UNKNOWN ((pci_power_t __force) 5)
> #define PCI_POWER_ERROR ((pci_power_t __force) -1)
>
> +/* Remember to update this when the list above changes! */
> +extern const char *pci_power_names[];
> +
> +static inline const char *pci_power_name(pci_power_t state)
> +{
> + return pci_power_names[1 + (int) state];
> +}
> +
> #define PCI_PM_D2_DELAY 200
> #define PCI_PM_D3_WAIT 10
> #define PCI_PM_BUS_WAIT 50
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