Re: [REGRESSION] usb: gadget: f_fs: Allow scatter-gather buffers

[Andrzej Pietrasiewicz]

Hi John,

<snip>

> > Is there anything else I can try for you?
>
> Have you tried compiling FunctionFS with debugging enabled?
> You do so bu uncommenting:
>
> /* #define DEBUG */
> /* #define VERBOSE_DEBUG */
>
> at the beginning of drivers/usb/gadget/function/f_fs.c
>
> Is there anything suspicious in the kernel log when you run it then?


<snip>

> One question that comes to my mind is this: Does the USB transmission
> stall (e.g. endpoint stall) or not? In other words, is adb connection
> broken because USB stops transmitting anything, or because the
> data is transmitted but its integrity is broken during transmission
> and that causes adb/adbd confusion which results in stopping their
> operation? Does anything keep happening on FunctionFS when adb
> connection is broken?

Any discoveries about the problem?

Andrzej