From 3deac4165ecb6173799893ee259bffff78bd274a Mon Sep 17 00:00:00 2001
From: Werner Almesberger <werner@almesberger.net>
Date: Wed, 11 May 2011 03:22:53 -0300
Subject: [PATCH] libatrf: new function usb_rescan to force next open_usb to
 scan tree again

- tools/include/usbopen.h (usb_rescan), tools/lib/usbopen.c (initialized,
  initialize, usb_rescan): usb_rescan forces a re-initialization of
  libusb and a new scan of the USB device tree
---
 tools/include/usbopen.h | 1 +
 tools/lib/usbopen.c     | 8 +++++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/tools/include/usbopen.h b/tools/include/usbopen.h
index cc2c919..c7bc763 100644
--- a/tools/include/usbopen.h
+++ b/tools/include/usbopen.h
@@ -19,6 +19,7 @@
 
 
 usb_dev_handle *open_usb(uint16_t default_vendor, uint16_t default_product);
+void usb_rescan(void);
 void parse_usb_id(const char *id);
 void restrict_usb_path(const char *path);
 void usb_unrestrict(void);
diff --git a/tools/lib/usbopen.c b/tools/lib/usbopen.c
index 543d078..b807db2 100644
--- a/tools/lib/usbopen.c
+++ b/tools/lib/usbopen.c
@@ -29,11 +29,11 @@
 static uint16_t vendor = 0;
 static uint16_t product = 0;
 static const struct usb_device *restricted_path = NULL;
+static int initialized = 0;
 
 
 static void initialize(void)
 {
-	static int initialized = 0;
 
 	if (initialized)
 		return;
@@ -45,6 +45,12 @@ static void initialize(void)
 }
 
 
+void usb_rescan(void)
+{
+	initialized = 0;
+}
+
+
 usb_dev_handle *open_usb(uint16_t default_vendor, uint16_t default_product)
 {
 	const struct usb_bus *bus;