diff mbox

usb-host: fix streams detection in usb_host_speed_compat

Message ID 1473406890-30164-1-git-send-email-kraxel@redhat.com
State New
Headers show

Commit Message

Gerd Hoffmann Sept. 9, 2016, 7:41 a.m. UTC 
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>
---
 hw/usb/host-libusb.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
diff mbox

Patch

diff --git a/hw/usb/host-libusb.c b/hw/usb/host-libusb.c
index e94672c..bd81d71 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;