On Fri, 12 Jan 2018, Benjamin Herrenschmidt wrote:
> The current code tries to test for bits that are masked out by
> usb_endpoint_maxp(). Instead, use the proper accessor to access
> the new high bandwidth bits.
>
> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
> ---
Shouldn't this fix be queued for the stable kernels too?
Alan Stern
> drivers/usb/gadget/udc/core.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c
> index 1b3efb14aec7..ac0541529499 100644
> --- a/drivers/usb/gadget/udc/core.c
> +++ b/drivers/usb/gadget/udc/core.c
> @@ -912,7 +912,7 @@ int usb_gadget_ep_match_desc(struct usb_gadget *gadget,
> return 0;
>
> /* "high bandwidth" works only at high speed */
> - if (!gadget_is_dualspeed(gadget) && usb_endpoint_maxp(desc) & (3<<11))
> + if (!gadget_is_dualspeed(gadget) && usb_endpoint_maxp_mult(desc) > 1)
> return 0;
>
> switch (type) {
--
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