Re: [PATCHv2] usb: gadget: get rid of USB_GADGET_DUALSPEED and USB_GADGET_SUPERSPEED

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On Thu, 18 Aug 2011 05:01:11 +0200, Yang Rui Rui <ruirui.r.yang@xxxxxxxxx> wrote:
I did not see the include/linux/usb/gadget.h changes, did you have another patch? There's CONFIG_USB_GADGET_DUALSPEED ifdefs in gadget_is_dualspeed function of the gadget.h
If so, I will get oops as before.

Thanks, fixed.  I did “git add -u” while I was in drivers/usb/gadget so
gadget.h did not get added and I've overlooked it.  Sorry about that.

On 08/17/2011 11:33 PM, Michal Nazarewicz wrote:
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -1559,12 +1559,6 @@ composite_resume(struct usb_gadget *gadget)
  /*-------------------------------------------------------------------------*/

  static struct usb_gadget_driver composite_driver = {
-#ifdef CONFIG_USB_GADGET_SUPERSPEED
-       .speed          = USB_SPEED_SUPER,
-#else
-       .speed          = USB_SPEED_HIGH,
-#endif
-
         .unbind         = composite_unbind,

         .setup          = composite_setup,
@@ -1609,8 +1603,7 @@ int usb_composite_probe(struct usb_composite_driver *driver,
                 driver->iProduct = driver->name;
         composite_driver.function =  (char *) driver->name;
         composite_driver.driver.name = driver->name;
-       composite_driver.speed = min((u8)composite_driver.speed,
-                                    (u8)driver->max_speed);
+       composite_driver.speed = driver->max_speed;

This does not works, many drivers will check the driver->speed, ie in musg_gadget.c

Uh?  Not sure what you mean here.  Note that driver above is not the same
structure as driver below.  composite_driver is what musb_gadget_start()
will get.

static int musb_gadget_start(struct usb_gadget *g,
                 struct usb_gadget_driver *driver)
{
         struct musb             *musb = gadget_to_musb(g);
         unsigned long           flags;
         int                     retval = -EINVAL;

         if (driver->speed != USB_SPEED_HIGH)
                 goto err0;
[snip]

         composite = driver;
         composite_gadget_bind = bind;

--
Best regards,                                         _     _
.o. | Liege of Serenely Enlightened Majesty of      o' \,=./ `o
..o | Computer Science,  Michal "mina86" Nazarewicz    (o o)
ooo +-----<email/xmpp: mnazarewicz@xxxxxxxxxx>-----ooO--(_)--Ooo--
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