On Fri, Jul 10, 2020 at 10:30 AM Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx> wrote:
>
> The wMaxPacketSize field of endpoint descriptor may be zero
> as default value in alternate interface, and they are not
> actually selected when start stream, so skip them when try to
> allocate bandwidth.
>
> Cc: stable <stable@xxxxxxxxxxxxxxx>
> Signed-off-by: Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx>
Add this?
Fixes: 0cbd4b34cda9dfd ("xhci: mediatek: support MTK xHCI host controller")
> ---
> drivers/usb/host/xhci-mtk-sch.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/usb/host/xhci-mtk-sch.c b/drivers/usb/host/xhci-mtk-sch.c
> index fea5555..45c54d56 100644
> --- a/drivers/usb/host/xhci-mtk-sch.c
> +++ b/drivers/usb/host/xhci-mtk-sch.c
> @@ -557,6 +557,10 @@ static bool need_bw_sch(struct usb_host_endpoint *ep,
> if (is_fs_or_ls(speed) && !has_tt)
> return false;
>
> + /* skip endpoint with zero maxpkt */
> + if (usb_endpoint_maxp(&ep->desc) == 0)
> + return false;
> +
> return true;
> }
>
> --
> 1.9.1
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