From 69a2ec680163cf1dc494dfccdd8c28db07ee9115 Mon Sep 17 00:00:00 2001
From: Gerhard Jaeger <gerhard@gjaeger.de>
Date: Fri, 22 Feb 2013 09:07:32 +0100
Subject: [PATCH] Fix another bug in the libusb1 part of functioin
 check_libusb_device() that prevents sanner detection for certain devices.

---
 tools/sane-find-scanner.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/sane-find-scanner.c b/tools/sane-find-scanner.c
index bd3c3a4a5..fde0abeb1 100644
--- a/tools/sane-find-scanner.c
+++ b/tools/sane-find-scanner.c
@@ -1046,7 +1046,7 @@ check_libusb_device (libusb_device *dev, SANE_Bool from_file)
 	    break;
 	  case USB_CLASS_PER_INTERFACE:
 	    if ((config0->interface[intf].num_altsetting == 0)
-		|| config0->interface[intf].altsetting)
+		|| !config0->interface[intf].altsetting)
 	      break;
 	    switch (config0->interface[intf].altsetting[0].bInterfaceClass)
 	      {