On Wed, Jul 08 2015, Robert Baldyga wrote:
> Function midi registers two interfaces with single set_alt() function
> which means that f_midi_set_alt() is called twice when configuration
> is set. That means that endpoint initialization and ep request allocation
> is done two times. To avoid this problem we do such things only once,
> for interface number 1 (MIDI Streaming interface).
>
> Signed-off-by: Robert Baldyga <r.bald...@samsung.com>

Acked-by: Michal Nazarewicz <min...@mina86.com>

> ---
>  drivers/usb/gadget/function/f_midi.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/drivers/usb/gadget/function/f_midi.c 
> b/drivers/usb/gadget/function/f_midi.c
> index 6316aa5..4cef222 100644
> --- a/drivers/usb/gadget/function/f_midi.c
> +++ b/drivers/usb/gadget/function/f_midi.c
> @@ -329,6 +329,10 @@ static int f_midi_set_alt(struct usb_function *f, 
> unsigned intf, unsigned alt)
>       unsigned i;
>       int err;
>  
> +     /* For Control Device interface we do nothing */
> +     if (intf == 0)
> +             return 0;
> +
>       err = f_midi_start_ep(midi, f, midi->in_ep);
>       if (err)
>               return err;
> -- 
> 1.9.1
>

-- 
Best regards,                                         _     _
.o. | Liege of Serenely Enlightened Majesty of      o' \,=./ `o
..o | Computer Science,  Michał “mina86” Nazarewicz    (o o)
ooo +--<m...@google.com>--<xmpp:min...@jabber.org>--ooO--(_)--Ooo--
_______________________________________________
devel mailing list
de...@linuxdriverproject.org
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel

Reply via email to