From: Gerd Hoffmann <kraxel@redhat.com>
Date: Fri, 9 Sep 2016 07:41:30 +0000 (+0200)
Subject: usb-host: fix streams detection in usb_host_speed_compat
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=6a71123469e0c9286354c6655440da51566c1763;p=qemu.git

usb-host: fix streams detection in usb_host_speed_compat

The companion descriptor is present on all usb3 devices, not only
those with streams support.  We need to check attributes to see
whenever the device uses streams or not.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1473406890-30164-1-git-send-email-kraxel@redhat.com
---

diff --git a/hw/usb/host-libusb.c b/hw/usb/host-libusb.c
index e94672c155..bd81d71a98 100644
--- a/hw/usb/host-libusb.c
+++ b/hw/usb/host-libusb.c
@@ -743,10 +743,13 @@ static void usb_host_speed_compat(USBHostDevice *s)
                         rc = libusb_get_ss_endpoint_companion_descriptor
                             (ctx, endp, &endp_ss_comp);
                         if (rc == LIBUSB_SUCCESS) {
+                            int streams = endp_ss_comp->bmAttributes & 0x1f;
+                            if (streams) {
+                                compat_full = false;
+                                compat_high = false;
+                            }
                             libusb_free_ss_endpoint_companion_descriptor
                                 (endp_ss_comp);
-                            compat_full = false;
-                            compat_high = false;
                         }
 #endif
                         break;