diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2020-01-17 08:37:16 +0100 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2020-02-12 17:20:41 +0100 |
| commit | 8ddcc43592f215a7523774704df6c60d12d9f647 (patch) | |
| tree | b9c2f7e13af0fad8702eda012691a2b3a121c5da /hw/usb | |
| parent | 76d0a9362c6a6a7d88aa18c84c4186c9107ecaef (diff) | |
uas: fix super speed bMaxPacketSize0
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
Diffstat (limited to 'hw/usb')
| -rw-r--r-- | hw/usb/dev-uas.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/usb/dev-uas.c b/hw/usb/dev-uas.c index 9825ec37d0..11a8684cc2 100644 --- a/hw/usb/dev-uas.c +++ b/hw/usb/dev-uas.c @@ -303,7 +303,7 @@ static const USBDescDevice desc_device_high = { static const USBDescDevice desc_device_super = { .bcdUSB = 0x0300, - .bMaxPacketSize0 = 64, + .bMaxPacketSize0 = 9, .bNumConfigurations = 1, .confs = (USBDescConfig[]) { { |