From: Uwe Bonnes <bon@elektron.ikp.physik.tu-darmstadt.de>
Date: Tue, 1 Feb 2011 10:02:24 +0000 (+0100)
Subject: Check ftdi pointer before accessing it
X-Git-Tag: v1.0rc1~133^2~2
X-Git-Url: http://developer.intra2net.com/git/?p=libftdi;a=commitdiff_plain;h=6ab07768470d23ded51bbfd6e5e181b11cd70cd3

Check ftdi pointer before accessing it
---

diff --git a/src/ftdi.c b/src/ftdi.c
index 6de60be..f2853d3 100644
--- a/src/ftdi.c
+++ b/src/ftdi.c
@@ -643,12 +643,12 @@ int ftdi_usb_open_desc_index(struct ftdi_context *ftdi, int vendor, int product,
     char string[256];
     int i = 0;
 
-    if (libusb_init(&ftdi->usb_ctx) < 0)
-        ftdi_error_return(-11, "libusb_init() failed");
-
     if (ftdi == NULL)
         ftdi_error_return(-11, "ftdi context invalid");
 
+    if (libusb_init(&ftdi->usb_ctx) < 0)
+        ftdi_error_return(-11, "libusb_init() failed");
+
     if (libusb_get_device_list(ftdi->usb_ctx, &devs) < 0)
         ftdi_error_return(-12, "libusb_get_device_list() failed");