On Fri, Jan 25, 2013 at 03:45:37PM +0800, Peter Chen wrote:
> On Thu, Jan 24, 2013 at 10:40:36PM +0200, Felipe Balbi wrote:
> > this function will receive enum usb_device_state
> > and return a human-readable string from it or,
> > case an unknown value is passed as argument,
> > the string "UNKNOWN".
> >
> > Signed-off-by: Felipe Balbi <balbi@xxxxxx>
> > ---
> > drivers/usb/usb-common.c | 21 +++++++++++++++++++++
> > include/linux/usb/ch9.h | 9 +++++++++
> > 2 files changed, 30 insertions(+)
> >
> > diff --git a/drivers/usb/usb-common.c b/drivers/usb/usb-common.c
> > index d29503e..070b681 100644
> > --- a/drivers/usb/usb-common.c
> > +++ b/drivers/usb/usb-common.c
> > @@ -32,4 +32,25 @@ const char *usb_speed_string(enum usb_device_speed speed)
> > }
> > EXPORT_SYMBOL_GPL(usb_speed_string);
> >
> > +const char *usb_state_string(enum usb_device_state state)
> > +{
> > + static const char *const names[] = {
> > + [USB_STATE_NOTATTACHED] = "not attached",
> > + [USB_STATE_ATTACHED] = "attached",
> > + [USB_STATE_POWERED] = "powered",
> > + [USB_STATE_RECONNECTING] = "reconnecting",
> > + [USB_STATE_UNAUTHENTICATED] = "unauthenticated",
> > + [USB_STATE_DEFAULT] = "default",
> > + [USB_STATE_ADDRESS] = "addresssed",
> > + [USB_STATE_CONFIGURED] = "configured",
> > + [USB_STATE_SUSPENDED] = "suspended",
> > + };
>
> What does the "reconnecting" means?
> Besides, can we have a brief comment about the meaning of these string?
> For the host sends resume signal to device when the device is at suspended
> mode, do we need to add "resumed" state?
why resumed ? after resuming you go back to default or addressed or
configured states.
--
balbi
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