[U-Boot] [PATCH] usb: xhci: Fix vendor command error if the request type is USB_REQ_SET_ADDRESS or USB_REQ_SET_CONFIGURATION.

[Marek Vasut <marex@denx.de>]

On Monday, January 25, 2016 at 12:11:59 PM, Ted wrote:
> Hi Marek,

Hi Ted,

> > -----Original Message-----
> > From: Marek Vasut [mailto:marex at denx.de]
> > Sent: Thursday, November 26, 2015 9:25 AM
> > To: Ted
> > Cc: swarren at nvidia.com; u-boot at lists.denx.de;
> > linux.amoon at gmail.com; Hans de Goede
> > Subject: Re: [PATCH] usb: xhci: Fix vendor command error if
> > the request type is USB_REQ_SET_ADDRESS or USB_REQ_SET_CONFIGURATION.
> > 
> > On Wednesday, November 25, 2015 at 06:57:48 AM, Ted Chen wrote:
> > > Add a condition of set_address and set_configuration to
> > 
> > check if the
> > 
> > > request is standardized.
> > > 
> > > Signed-off-by: Ted Chen <tedchen@realtek.com>
> > > ---
> > > 
> > >  drivers/usb/host/xhci.c |    6 ++++--
> > >  1 file changed, 4 insertions(+), 2 deletions(-)
> > > 
> > > diff --git a/drivers/usb/host/xhci.c
> > 
> > b/drivers/usb/host/xhci.c index
> > 
> > > ca598aa..cb8a04b 100644
> > > --- a/drivers/usb/host/xhci.c
> > > +++ b/drivers/usb/host/xhci.c
> > > @@ -941,10 +941,12 @@ static int _xhci_submit_control_msg(struct
> > > usb_device *udev, unsigned long pipe, if
> > 
> > (usb_pipedevice(pipe) == ctrl->rootdev)
> > 
> > >  		return xhci_submit_root(udev, pipe, buffer, setup);
> > 
> > Hi!
> > What do you say we reorder the check a little:
> > 
> > if ((setup->requesttype & USB_TYPE_MASK) == USB_TYPE_STANDARD) {
> > 
> > 	if (setup->request == USB_REQ_SET_ADDRESS)
> > 	
> > 		return xhci_address_device(udev, root_portnr);
> > 	
> > 	if (setup->request == USB_REQ_SET_CONFIGURATION)
> > 	
> > 		...
> > 
> > }
> > 
> > Also, I suspect this sort of fix needs to be applied to at
> > least dwc3 ep0.c, r8a66597-hcd.c and musb_hcd.c as well.
> 
> I don't have another board in my hand, so I can't verify the other xhci
> host controller.

That's fine, just fixing this problem everywhere is enough and the people
who have the controller can test it themselves.

> But I have confirmed this patch in xhci.c actually can fix errors while 
> the the request type is USB_REQ_SET_ADDRESS or USB_REQ_SET_CONFIGURATION
> in USB vendor command.

Excellent.

> > Paging Hans so he can share his visdom too :)
> 
> Hi Hans,
> 
> Do you have any comments?
> 
> Thanks

Thanks!

> > > -	if (setup->request == USB_REQ_SET_ADDRESS)
> > > +	if (setup->request == USB_REQ_SET_ADDRESS &&
> > > +	   (setup->requesttype & USB_TYPE_MASK) == USB_TYPE_STANDARD)
> > > 
> > >  		return xhci_address_device(udev, root_portnr);
> > > 
> > > -	if (setup->request == USB_REQ_SET_CONFIGURATION) {
> > > +	if (setup->request == USB_REQ_SET_CONFIGURATION &&
> > > +	   (setup->requesttype & USB_TYPE_MASK) == USB_TYPE_STANDARD) {
> > > 
> > >  		ret = xhci_set_configuration(udev);
> > >  		if (ret) {
> > >  		
> > >  			puts("Failed to configure xHCI endpoint\n");
> > 
> > Best regards,
> > Marek Vasut
> > 
> > ------Please consider the environment before printing this e-mail.