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usb-host: fix streams detection in usb_host_speed_compat

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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
This commit is contained in:
Gerd Hoffmann 2016-09-09 09:41:30 +02:00
parent b66ad1f1aa
commit 6a71123469
1 changed files with 5 additions and 2 deletions
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7
hw/usb/host-libusb.c
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@ -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;