Re: [PATCH] usb: gadget: f_ncm: fix wrong usb_ep

[Henry Lin]

>> >Does your UDC driver call composite_disconnect when disconnect from the host?
>> >It should set all desc to NULL at related function ->disable.
>>
>> For ECM case, if ecm_set_alt() gets called with alt == 0, in_ep->desc and out_ep-
>> >desc will be set up. But these two ep will not be enabled as gether_connect() is not
>> executed. During disconnect from the host, ecm_disable() gets called with ep
>> disabled. In this case, gether_disconnect() will not get called to set desc to NULL.

>Would you please share your test case? I use Linux host, and the host will always set alt for 1,
>and doesn't have this issue.
Using Windows host (without any proprietary NCM/ECM driver installed) can reproduce set alt
to 0. We just used Win10 to confirm this.