Provided by: linux-doc-2.6.15_2.6.15-23.39_all
usb_get_status - issues a GET_STATUS call
int usb_get_status (struct usb_device * dev, int type, int target,
void * data);
dev the device whose status is being checked
type USB_RECIP_*; for device, interface, or endpoint
target zero (for device), else interface or endpoint number
data pointer to two bytes of bitmap data
Returns device, interface, or endpoint status. Normally only of
interest to see if the device is self powered, or has enabled the
remote wakeup facility; or whether a bulk or interrupt endpoint is
Bits in these status bitmaps are set using the SET_FEATURE request, and
cleared using the CLEAR_FEATURE request. The usb_clear_halt function
should be used to clear halt (‘‘stall’’) status.
This call is synchronous, and may not be used in an interrupt context.
Returns the number of bytes received on success, or else the status
code returned by the underlying usb_control_msg call.