usrp2: added the concept of device locking to usrp2/nseries devices

Each iface instance can lock itself to a particular device.
When the device is locked, it cannot be discovered through find.

Locking works by having a lock thread periodically update
a register in the firmware that says when the device was last locked.
The find routine can determine if a device is locked by checking
the difference between the current time and this register.

1 files changed, 1 insertions, 1 deletions

diff --git a/host/lib/usrp/usrp2/usrp2_regs.cpp b/host/lib/usrp/usrp2/usrp2_regs.cpp
index 57ae36857..240bc3bab 100644
--- a/host/lib/usrp/usrp2/usrp2_regs.cpp
+++ b/host/lib/usrp/usrp2/usrp2_regs.cpp
@@ -56,7 +56,7 @@ int sr_addr(int sr) {
     return SETTING_REGS_BASE + (4 * sr);
 }
 
-usrp2_regs_t usrp2_get_regs(bool) {
+usrp2_regs_t usrp2_get_regs(void) {
   usrp2_regs_t x;
   x.misc_ctrl_clock = sr_addr(0);
   x.misc_ctrl_serdes = sr_addr(1);