From d55ebf5539139b26b9c6412a834cb493f008a8a9 Mon Sep 17 00:00:00 2001 From: Jason Wessel Date: Mon, 18 May 2009 10:00:28 -0500 Subject: [PATCH] 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 --- usb-linux.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) 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 @@ static int usb_linux_update_endp_table(USBHostDevice *s) 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 -- 1.7.9.5