USB serial device support
Add in a workaround to allow the usb serial devices to work with the
usb pass through mechanism. The ioctl() to request an alternate
interface will always return < 0 for a usb-serial device based on the
kernel driver. This means there is no alternate interface end point.
This was fully tested with a pl2303 usb serial device.
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
diff --git a/usb-linux.c b/usb-linux.c
index 70d7a1c..67e4acd 100644
--- a/usb-linux.c
+++ b/usb-linux.c
@@ -833,8 +833,7 @@
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
if (ret < 0) {
- perror("usb_linux_update_endp_table");
- return 1;
+ alt_interface = interface;
}
/* the current interface descriptor is the active interface
