ftdi_set_interface correctness by Strontium <strntydog@gmail.com>

git-svn-id: svn://svn.berlios.de/openocd/trunk@1814 b42882b7-edfa-0310-969c-e2dbd0fdcd60

src/jtag/ft2232.c

@@ -1766,6 +1766,12 @@ static int ft2232_init_libftdi(u16 vid, u16 pid, int more, int* try_more)
 	if (ftdi_init(&ftdic) < 0)
 		return ERROR_JTAG_INIT_FAILED;
 
+	if (ftdi_set_interface(&ftdic, INTERFACE_A) < 0)
+	{
+		LOG_ERROR("unable to select FT2232 channel A: %s", ftdic.error_str);
+		return ERROR_JTAG_INIT_FAILED;
+	}
+
 	/* context, vendor id, product id */
 	if (ftdi_usb_open_desc(&ftdic, vid, pid, ft2232_device_desc,
 				ft2232_serial) < 0)
@@ -1779,12 +1785,6 @@ static int ft2232_init_libftdi(u16 vid, u16 pid, int more, int* try_more)
 		return ERROR_JTAG_INIT_FAILED;
 	}
 
-	if (ftdi_set_interface(&ftdic, INTERFACE_A) < 0)
-	{
-		LOG_ERROR("unable to select FT2232 channel A: %s", ftdic.error_str);
-		return ERROR_JTAG_INIT_FAILED;
-	}
-
 	if (ftdi_usb_reset(&ftdic) < 0)
 	{
 		LOG_ERROR("unable to reset ftdi device");