[U-Boot] [PATCH 1/2] usb: gadget: fastboot: Request status and length check in rx handler

[Lukasz Majewski <l.majewski@samsung.com>]

Hi Paul,

> Le mardi 14 juillet 2015 ? 12:22 +0200, Lukasz Majewski a ?crit :
> > Hi Paul,
> > 
> > > This avoids handling requests that have an error status or no
> > > data. In particular, this avoids showing unnecessary error
> > > messages when the USB gadget gets disconnected (e.g. with
> > > fastboot continue) and the fastboot USB gadget driver sends an
> > > error back to the host (that has disconnected already).
> > > 
> > > Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
> > > ---
> > >  drivers/usb/gadget/f_fastboot.c | 11 ++++++-----
> > >  1 file changed, 6 insertions(+), 5 deletions(-)
> > > 
> > > diff --git a/drivers/usb/gadget/f_fastboot.c
> > > b/drivers/usb/gadget/f_fastboot.c index 206b6d1..b9a9099 100644
> > > --- a/drivers/usb/gadget/f_fastboot.c
> > > +++ b/drivers/usb/gadget/f_fastboot.c
> > > @@ -635,6 +635,9 @@ static void rx_handler_command(struct usb_ep
> > > *ep, struct usb_request *req) void (*func_cb)(struct usb_ep *ep,
> > > struct usb_request *req) = NULL; int i;
> > >  
> > > +	if (req->status != 0 || req->length == 0)
> > > +		return;
> > > +
> > >  	for (i = 0; i < ARRAY_SIZE(cmd_dispatch_info); i++) {
> > >  		if (!strcmp_l1(cmd_dispatch_info[i].cmd,
> > > cmdbuf)) { func_cb = cmd_dispatch_info[i].cb;
> > > @@ -656,9 +659,7 @@ static void rx_handler_command(struct usb_ep
> > > *ep, struct usb_request *req) }
> > >  	}
> > >  
> > > -	if (req->status == 0) {
> > > -		*cmdbuf = '\0';
> > > -		req->actual = 0;
> > > -		usb_ep_queue(ep, req, 0);
> > > -	}
> > > +	*cmdbuf = '\0';
> > > +	req->actual = 0;
> > > +	usb_ep_queue(ep, req, 0);
> > >  }
> > 
> > Any more comments to those patches? I mean 1/2 and 2/2.
> 
> I could test them on OMAP3 and OMAP5 if you'd like. Together with
> sunxi (that I developped this on), I think a fair share of platforms
> using musb-new would be covered. Testing on am33xx and omap4 would be
> nice, too.
> 

More testing is always welcome. Please write proper Tested-by with
target SoC/board name as a reply to this e-mail.

Then I will pick those patches to -dfu tree.

Thanks !

-- 
Best regards,

Lukasz Majewski

Samsung R&D Institute Poland (SRPOL) | Linux Platform Group