code cleanup

usb_host.c

@@ -16,7 +16,6 @@ host_state_t host_state;
 struct report_desc *descriptors;
 uint8_t num_mounted=0;
 static absolute_time_t request_time;
-static struct report_data *report;
 static bool enabled=false;
 static uint8_t kb_addr=0;
 
@@ -91,7 +90,7 @@ void tuh_hid_mount_cb(uint8_t dev_addr, uint8_t instance, uint8_t const* desc_re
 	cdc_count = sprintf(cdc_buf, "Mount: [%04x:%04x][%u:%u] Protocol = %u\n", vid, pid, dev_addr, instance, itf_protocol);
 	tud_cdc_write(cdc_buf, cdc_count);
 
-
+	// enable RGB control if HyperX Elite 2 is mounted
 	if (vid==HYPERX_KEYBOARD_VID && pid==HYPERX_ELITE2_PID) {
 		kb_addr = dev_addr;
 		enabled = true;
@@ -119,6 +118,7 @@ void tuh_hid_umount_cb(uint8_t dev_addr, uint8_t instance)
 	remove_instance(dev_addr, instance);
 	if (dev_addr == kb_addr) {
 		enabled = false;
+		kb_addr=0;
 	}
 	num_mounted--;
 	host_state=HOST_UNMOUNTED;