Free the USB Request Block allocated by usbd_alloc_urb()
#include <sys/usbdi.h> struct usbd_urb *usbd_free_urb( struct usbd_urb *urb );
libusbdi
The usbd_free_urb() function frees the memory allocated by usbd_alloc_urb().
A pointer to the next URB in the chain, or NULL if there isn't one.
| Safety: | |
|---|---|
| Cancellation point | No |
| Interrupt handler | No |
| Signal handler | No |
| Thread | Yes |