initial import

[patches.git] / 0001-call-usb_set_configuration-before-usb_claim_interf.patch

From 128f757596a32ae23fe61711883f6210e1d90bd0 Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Thu, 24 Apr 2008 02:00:15 -0400
Subject: [PATCH] call usb_set_configuration() before usb_claim_interface()

---
 src/ftdi.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/src/ftdi.c b/src/ftdi.c
index 043d24a..56fea0c 100644
--- a/src/ftdi.c
+++ b/src/ftdi.c
@@ -341,6 +341,7 @@ int ftdi_usb_get_strings(struct ftdi_context * ftdi, struct usb_device * dev,
     \param dev libusb usb_dev to use
 
     \retval  0: all fine
+    \retval -3: unable to config device
     \retval -4: unable to open device
     \retval -5: unable to claim device
     \retval -6: reset failed
@@ -359,6 +360,15 @@ int ftdi_usb_open_dev(struct ftdi_context *ftdi, struct usb_device *dev)
         detach_errno = errno;
 #endif
 
+    if (usb_set_configuration(ftdi->usb_dev, dev->config[0].bConfigurationValue)) {
+        usb_close (ftdi->usb_dev);
+        if (detach_errno == EPERM) {
+            ftdi_error_return(-8, "inappropriate permissions on device!");
+        } else {
+            ftdi_error_return(-3, "unable to set usb configuration. Make sure ftdi_sio is unloaded!");
+        }
+    }
+
     if (usb_claim_interface(ftdi->usb_dev, ftdi->interface) != 0) {
         usb_close (ftdi->usb_dev);
         if (detach_errno == EPERM) {
-- 
1.5.5