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For usb2 bMaxPacketSize0 is "n", for usb3 it is "1 << n", so it must be 9 not 64 ... rom "Universal Serial Bus 3.1 Specification": If the device is operating at Gen X speed, the bMaxPacketSize0 field shall be set to 09H indicating a 512-byte maximum packet. An Enhanced SuperSpeed device shall not support any other maximum packet sizes for the default control pipe (endpoint 0) control endpoint. We now announce a 512-byte maximum packet. Fixes: 89a453d4a5c ("uas-uas: usb3 streams") Reported-by: Benjamin David Lunt <fys@fysnet.net> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20200117073716.31335-1-kraxel@redhat.com