Changes in uspace/lib/usb/src/host/device_keeper.c [ffc63b0:049eb87] in mainline

File:

• uspace/lib/usb/src/host/device_keeper.c (modified) (1 diff)

uspace/lib/usb/src/host/device_keeper.c

@@ -264 +264 @@
         return instance->devices[address].speed;
 }
+/*----------------------------------------------------------------------------*/
+void usb_device_keeper_use_control(
+    usb_device_keeper_t *instance, usb_target_t target)
+{
+        assert(instance);
+        const uint16_t ep = 1 << target.endpoint;
+        fibril_mutex_lock(&instance->guard);
+        while (instance->devices[target.address].control_used & ep) {
+                fibril_condvar_wait(&instance->change, &instance->guard);
+        }
+        instance->devices[target.address].control_used |= ep;
+        fibril_mutex_unlock(&instance->guard);
+}
+/*----------------------------------------------------------------------------*/
+void usb_device_keeper_release_control(
+    usb_device_keeper_t *instance, usb_target_t target)
+{
+        assert(instance);
+        const uint16_t ep = 1 << target.endpoint;
+        fibril_mutex_lock(&instance->guard);
+        assert((instance->devices[target.address].control_used & ep) != 0);
+        instance->devices[target.address].control_used &= ~ep;
+        fibril_mutex_unlock(&instance->guard);
+        fibril_condvar_signal(&instance->change);
+}
 /**
  * @}