On 1/22/2021 8:24 AM, Alan Stern wrote:
> On Thu, Jan 21, 2021 at 08:01:37PM -0800, Wesley Cheng wrote:
>> Some UDCs may have constraints on how many high bandwidth endpoints it can
>> support in a certain configuration. This API allows for the composite
>> driver to pass down the total number of endpoints to the UDC so it can verify
>> it has the required resources to support the configuration.
>>
>> Signed-off-by: Wesley Cheng <wcheng@xxxxxxxxxxxxxx>
>
>
>> --- a/include/linux/usb/gadget.h
>> +++ b/include/linux/usb/gadget.h
>> @@ -328,6 +328,7 @@ struct usb_gadget_ops {
>> struct usb_ep *(*match_ep)(struct usb_gadget *,
>> struct usb_endpoint_descriptor *,
>> struct usb_ss_ep_comp_descriptor *);
>> + int (*check_config)(struct usb_gadget *gadget, unsigned long ep_map);
>> };
>>
>> /**
>> @@ -607,6 +608,7 @@ int usb_gadget_connect(struct usb_gadget *gadget);
>> int usb_gadget_disconnect(struct usb_gadget *gadget);
>> int usb_gadget_deactivate(struct usb_gadget *gadget);
>> int usb_gadget_activate(struct usb_gadget *gadget);
>> +int usb_gadget_check_config(struct usb_gadget *gadget, unsigned long ep_map);
>> #else
>> static inline int usb_gadget_frame_number(struct usb_gadget *gadget)
>> { return 0; }
>
> Don't you also need an entry for the case where CONFIG_USB_GADGET isn't
> enabled?
>
> Alan Stern
>
Hi Alan,
Thanks for pointing that out. I missed that, and will add it to the
next rev.
Thanks
Wesley Cheng
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