Re: [PATCH] usb gadget: don't save bind callback in struct usb_gadget_driver

Re: [PATCH] usb gadget: don't save bind callback in struct usb_gadget_driver

[Christoph Hellwig]

Can you please stop Ccing dozends of people on totally random patches?

I'm sick of getting my inbox spammed with all this crap.

Re: [PATCH] usb gadget: don't save bind callback in struct usb_gadget_driver

[Uwe Kleine-König]

Hi Michał,

On Mon, Aug 02, 2010 at 04:25:34PM +0200, Michał Nazarewicz wrote:
> Some random thoughts, one bug and mostly just minor comments:
>
>> @@ -1954,13 +1954,14 @@ static int setup_ep0(struct udc *dev)
>>  }
>> /* Called by gadget driver to register itself */
>> -int usb_gadget_register_driver(struct usb_gadget_driver *driver)
>> +int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
>> +		int (*bind)(struct usb_gadget *))
>>  {
>>  	struct udc		*dev = udc;
>>  	int			retval;
>>  	u32 tmp;
>> -	if (!driver || !driver->bind || !driver->setup
>> +	if (!driver || bind || !driver->setup
>
>
> ** BUG: Should read "!bind".
Yeah, Julia already pointed that out.

>> diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
>> @@ -1612,7 +1613,7 @@ int usb_gadget_register_driver (struct usb_gadget_driver *driver)
>>  	DBG("bound to %s\n", driver->driver.name);
>>  	return 0;
>>  }
>> -EXPORT_SYMBOL (usb_gadget_register_driver);
>> +EXPORT_SYMBOL (usb_gadget_probe_driver);
>
> How about also correcting space before "("?
Fixed.

>> diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c
>> @@ -1789,7 +1789,8 @@ out:
>>  	return IRQ_HANDLED;
>>  }
>> -int usb_gadget_register_driver(struct usb_gadget_driver *driver)
>> +int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
>> +		int (*bind)(struct usb_gadget *))
>>  {
>>  	struct usba_udc *udc = &the_udc;
>>  	unsigned long flags;
>
> There was no checking here?  How about adding?
Hmmm, I think this should be addressed in a different patch.

>> diff --git a/drivers/usb/gadget/ci13xxx_udc.c b/drivers/usb/gadget/ci13xxx_udc.c
>> @@ -2340,12 +2340,13 @@ static const struct usb_ep_ops usb_ep_ops = {
>>  static const struct usb_gadget_ops usb_gadget_ops;
>> /**
>> - * usb_gadget_register_driver: register a gadget driver
>> + * usb_gadget_probe_driver: register a gadget driver
>>   *
>> - * Check usb_gadget_register_driver() at "usb_gadget.h" for details
>> - * Interrupts are enabled here
>> + * Check usb_gadget_probe_driver() at "usb_gadget.h" for details.
>> + * Interrupts are enabled here.
>>   */
>
> usb_gadget.h is the old name.  How about correcting it as well?
done.

>
>> diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c
>> @@ -3583,7 +3582,7 @@ static int __init fsg_init(void)
>>  	if ((rc = fsg_alloc()) != 0)
>>  		return rc;
>>  	fsg = the_fsg;
>> -	if ((rc = usb_gadget_register_driver(&fsg_driver)) != 0)
>> +	if ((rc = usb_gadget_probe_driver(&fsg_driver, fsg_bind)) != 0)
>
> I'm tempted to propose:
>
> + rc = usb_gadget_probe_driver(&fsg_driver, fsg_bind);
> + if (rc != 0)
>
> which is more compatible with coding style but it probably would be inconsistent
> with the rest of the code.
>
>> diff --git a/drivers/usb/gadget/langwell_udc.c b/drivers/usb/gadget/langwell_udc.c
>> @@ -1807,7 +1807,8 @@ static DEVICE_ATTR(langwell_udc, S_IRUGO, show_langwell_udc, NULL);
>>   * the driver might get unbound.
>>   */
>> -int usb_gadget_register_driver(struct usb_gadget_driver *driver)
>> +int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
>> +		int (*bind)(struct usb_gadget *))
>>  {
>>  	struct langwell_udc	*dev = the_controller;
>>  	unsigned long		flags;
>
> Again, function has no checking, how about adding?
as above, IMHO this should be a seperate patch.

>> diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c
>> @@ -1698,7 +1698,8 @@ void musb_gadget_cleanup(struct musb *musb)
>>   * @param driver the gadget driver
>>   * @return <0 if error, 0 if everything is fine
>>   */
>
> I've just noticed that it misses @param bind in the comment.  Would be great to update it
> and all other occurrences.
done.

>> diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
>> @@ -798,17 +797,18 @@ struct usb_gadget_driver {
>>   */
>> /**
>> - * usb_gadget_register_driver - register a gadget driver
>> - * @driver:the driver being registered
>> + * usb_gadget_probe_driver - probe a gadget driver
>> + * @driver: the driver being registered
>
> + * @bind: the driver's bind callback.
>
>>   * Context: can sleep
>>   *
>>   * Call this in your gadget driver's module initialization function,
>>   * to tell the underlying usb controller driver about your driver.
>> - * The driver's bind() function will be called to bind it to a
>> - * gadget before this registration call returns.  It's expected that
>> - * the bind() functions will be in init sections.
>> + * The bind() function will be called to bind it to a gadget before this
>> + * registration call returns.  It's expected that the bind() function will
>
> Maybe "the @bind function" in those two places?
>
> So for what it's worth, I haven't noticed any other obvious problems.
>
> I think it still does not fix all the section mismatch warnings -- would have to look
> closer at composite gadgets -- so I think still parts of my patch is legit.
I prepared a patch that removes bind from usb_configuration, too.  Find
it in reply to this mail.

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |

[PATCH 1/2] usb gadget: don't save bind callback in struct usb_gadget_driver

[Uwe Kleine-König]

To accomplish this the function to register a gadget driver takes the bind
function as a second argument.  To make things clearer rename the function
to resemble platform_driver_probe.

This fixes many section mismatches like

	WARNING: drivers/usb/gadget/g_printer.o(.data+0xc): Section mismatch in
	reference from the variable printer_driver to the function
	.init.text:printer_bind()
	The variable printer_driver references
	the function __init printer_bind()

All callers are fixed.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Michał Nazarewicz <m.nazarewicz@samsung.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/usb/gadget/amd5536udc.c     |    9 +++++----
 drivers/usb/gadget/at91_udc.c       |   11 ++++++-----
 drivers/usb/gadget/atmel_usba_udc.c |    7 ++++---
 drivers/usb/gadget/ci13xxx_udc.c    |   18 ++++++++++--------
 drivers/usb/gadget/composite.c      |    3 +--
 drivers/usb/gadget/dummy_hcd.c      |   10 +++++-----
 drivers/usb/gadget/file_storage.c   |    3 +--
 drivers/usb/gadget/fsl_qe_udc.c     |   12 ++++++------
 drivers/usb/gadget/fsl_udc_core.c   |   10 +++++-----
 drivers/usb/gadget/gmidi.c          |    3 +--
 drivers/usb/gadget/goku_udc.c       |    9 +++++----
 drivers/usb/gadget/imx_udc.c        |    9 +++++----
 drivers/usb/gadget/inode.c          |    6 ++----
 drivers/usb/gadget/langwell_udc.c   |    9 +++++----
 drivers/usb/gadget/lh7a40x_udc.c    |   10 +++++-----
 drivers/usb/gadget/m66592-udc.c     |    9 +++++----
 drivers/usb/gadget/net2280.c        |   10 +++++-----
 drivers/usb/gadget/omap_udc.c       |   10 +++++-----
 drivers/usb/gadget/printer.c        |    5 ++---
 drivers/usb/gadget/pxa25x_udc.c     |    9 +++++----
 drivers/usb/gadget/pxa27x_udc.c     |   12 +++++++-----
 drivers/usb/gadget/r8a66597-udc.c   |    9 +++++----
 drivers/usb/gadget/s3c-hsotg.c      |    9 +++++----
 drivers/usb/gadget/s3c2410_udc.c    |   17 ++++++++---------
 drivers/usb/musb/musb_gadget.c      |    9 +++++----
 include/linux/usb/gadget.h          |   20 ++++++++------------
 26 files changed, 126 insertions(+), 122 deletions(-)

diff --git a/drivers/usb/gadget/amd5536udc.c b/drivers/usb/gadget/amd5536udc.c
index 731150d..fadebfd 100644
--- a/drivers/usb/gadget/amd5536udc.c
+++ b/drivers/usb/gadget/amd5536udc.c
@@ -1954,13 +1954,14 @@ static int setup_ep0(struct udc *dev)
 }
 
 /* Called by gadget driver to register itself */
-int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+		int (*bind)(struct usb_gadget *))
 {
 	struct udc		*dev = udc;
 	int			retval;
 	u32 tmp;
 
-	if (!driver || !driver->bind || !driver->setup
+	if (!driver || !bind || !driver->setup
 			|| driver->speed != USB_SPEED_HIGH)
 		return -EINVAL;
 	if (!dev)
@@ -1972,7 +1973,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 	dev->driver = driver;
 	dev->gadget.dev.driver = &driver->driver;
 
-	retval = driver->bind(&dev->gadget);
+	retval = bind(&dev->gadget);
 
 	/* Some gadget drivers use both ep0 directions.
 	 * NOTE: to gadget driver, ep0 is just one endpoint...
@@ -2000,7 +2001,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 
 	return 0;
 }
-EXPORT_SYMBOL(usb_gadget_register_driver);
+EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 /* shutdown requests and disconnect from gadget */
 static void
diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
index eaa79c8..e0f2911 100644
--- a/drivers/usb/gadget/at91_udc.c
+++ b/drivers/usb/gadget/at91_udc.c
@@ -1570,14 +1570,15 @@ static irqreturn_t at91_vbus_irq(int irq, void *_udc)
 	return IRQ_HANDLED;
 }
 
-int usb_gadget_register_driver (struct usb_gadget_driver *driver)
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+		int (*bind)(struct usb_gadget *))
 {
 	struct at91_udc	*udc = &controller;
 	int		retval;
 
 	if (!driver
 			|| driver->speed < USB_SPEED_FULL
-			|| !driver->bind
+			|| !bind
 			|| !driver->setup) {
 		DBG("bad parameter.\n");
 		return -EINVAL;
@@ -1594,9 +1595,9 @@ int usb_gadget_register_driver (struct usb_gadget_driver *driver)
 	udc->enabled = 1;
 	udc->selfpowered = 1;
 
-	retval = driver->bind(&udc->gadget);
+	retval = bind(&udc->gadget);
 	if (retval) {
-		DBG("driver->bind() returned %d\n", retval);
+		DBG("bind() returned %d\n", retval);
 		udc->driver = NULL;
 		udc->gadget.dev.driver = NULL;
 		dev_set_drvdata(&udc->gadget.dev, NULL);
@@ -1612,7 +1613,7 @@ int usb_gadget_register_driver (struct usb_gadget_driver *driver)
 	DBG("bound to %s\n", driver->driver.name);
 	return 0;
 }
-EXPORT_SYMBOL (usb_gadget_register_driver);
+EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 int usb_gadget_unregister_driver (struct usb_gadget_driver *driver)
 {
diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c
index d623c7b..e4810c6 100644
--- a/drivers/usb/gadget/atmel_usba_udc.c
+++ b/drivers/usb/gadget/atmel_usba_udc.c
@@ -1789,7 +1789,8 @@ out:
 	return IRQ_HANDLED;
 }
 
-int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+		int (*bind)(struct usb_gadget *))
 {
 	struct usba_udc *udc = &the_udc;
 	unsigned long flags;
@@ -1812,7 +1813,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 	clk_enable(udc->pclk);
 	clk_enable(udc->hclk);
 
-	ret = driver->bind(&udc->gadget);
+	ret = bind(&udc->gadget);
 	if (ret) {
 		DBG(DBG_ERR, "Could not bind to driver %s: error %d\n",
 			driver->driver.name, ret);
@@ -1841,7 +1842,7 @@ err_driver_bind:
 	udc->gadget.dev.driver = NULL;
 	return ret;
 }
-EXPORT_SYMBOL(usb_gadget_register_driver);
+EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 {
diff --git a/drivers/usb/gadget/ci13xxx_udc.c b/drivers/usb/gadget/ci13xxx_udc.c
index 6996951..98b36fc 100644
--- a/drivers/usb/gadget/ci13xxx_udc.c
+++ b/drivers/usb/gadget/ci13xxx_udc.c
@@ -2340,12 +2340,15 @@ static const struct usb_ep_ops usb_ep_ops = {
 static const struct usb_gadget_ops usb_gadget_ops;
 
 /**
- * usb_gadget_register_driver: register a gadget driver
+ * usb_gadget_probe_driver: register a gadget driver
+ * @driver: the driver being registered
+ * @bind: the driver's bind callback
  *
- * Check usb_gadget_register_driver() at "usb_gadget.h" for details
- * Interrupts are enabled here
+ * Check usb_gadget_probe_driver() at <linux/usb/gadget.h> for details.
+ * Interrupts are enabled here.
  */
-int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+		int (*bind)(struct usb_gadget *))
 {
 	struct ci13xxx *udc = _udc;
 	unsigned long i, k, flags;
@@ -2354,7 +2357,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 	trace("%p", driver);
 
 	if (driver             == NULL ||
-	    driver->bind       == NULL ||
+	    bind               == NULL ||
 	    driver->unbind     == NULL ||
 	    driver->setup      == NULL ||
 	    driver->disconnect == NULL ||
@@ -2430,7 +2433,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 	udc->gadget.dev.driver = &driver->driver;
 
 	spin_unlock_irqrestore(udc->lock, flags);
-	retval = driver->bind(&udc->gadget);                /* MAY SLEEP */
+	retval = bind(&udc->gadget);                /* MAY SLEEP */
 	spin_lock_irqsave(udc->lock, flags);
 
 	if (retval) {
@@ -2447,7 +2450,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 		usb_gadget_unregister_driver(driver);
 	return retval;
 }
-EXPORT_SYMBOL(usb_gadget_register_driver);
+EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 /**
  * usb_gadget_unregister_driver: unregister a gadget driver
@@ -2462,7 +2465,6 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 	trace("%p", driver);
 
 	if (driver             == NULL ||
-	    driver->bind       == NULL ||
 	    driver->unbind     == NULL ||
 	    driver->setup      == NULL ||
 	    driver->disconnect == NULL ||
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index 391d169..d07960e 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -1112,7 +1112,6 @@ composite_resume(struct usb_gadget *gadget)
 static struct usb_gadget_driver composite_driver = {
 	.speed		= USB_SPEED_HIGH,
 
-	.bind		= composite_bind,
 	.unbind		= composite_unbind,
 
 	.setup		= composite_setup,
@@ -1152,7 +1151,7 @@ int usb_composite_register(struct usb_composite_driver *driver)
 	composite_driver.driver.name = driver->name;
 	composite = driver;
 
-	return usb_gadget_register_driver(&composite_driver);
+	return usb_gadget_probe_driver(&composite_driver, composite_bind);
 }
 
 /**
diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c
index 4f9e578..5860222 100644
--- a/drivers/usb/gadget/dummy_hcd.c
+++ b/drivers/usb/gadget/dummy_hcd.c
@@ -748,7 +748,8 @@ static DEVICE_ATTR (function, S_IRUGO, show_function, NULL);
  */
 
 int
-usb_gadget_register_driver (struct usb_gadget_driver *driver)
+usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+		int (*bind)(struct usb_gadget *))
 {
 	struct dummy	*dum = the_controller;
 	int		retval, i;
@@ -757,8 +758,7 @@ usb_gadget_register_driver (struct usb_gadget_driver *driver)
 		return -EINVAL;
 	if (dum->driver)
 		return -EBUSY;
-	if (!driver->bind || !driver->setup
-			|| driver->speed == USB_SPEED_UNKNOWN)
+	if (!bind || !driver->setup || driver->speed == USB_SPEED_UNKNOWN)
 		return -EINVAL;
 
 	/*
@@ -796,7 +796,7 @@ usb_gadget_register_driver (struct usb_gadget_driver *driver)
 	dum->gadget.dev.driver = &driver->driver;
 	dev_dbg (udc_dev(dum), "binding gadget driver '%s'\n",
 			driver->driver.name);
-	retval = driver->bind(&dum->gadget);
+	retval = bind(&dum->gadget);
 	if (retval) {
 		dum->driver = NULL;
 		dum->gadget.dev.driver = NULL;
@@ -812,7 +812,7 @@ usb_gadget_register_driver (struct usb_gadget_driver *driver)
 	usb_hcd_poll_rh_status (dummy_to_hcd (dum));
 	return 0;
 }
-EXPORT_SYMBOL (usb_gadget_register_driver);
+EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 int
 usb_gadget_unregister_driver (struct usb_gadget_driver *driver)
diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c
index b49d86e..7c858ca 100644
--- a/drivers/usb/gadget/file_storage.c
+++ b/drivers/usb/gadget/file_storage.c
@@ -3541,7 +3541,6 @@ static struct usb_gadget_driver		fsg_driver = {
 	.speed		= USB_SPEED_FULL,
 #endif
 	.function	= (char *) fsg_string_product,
-	.bind		= fsg_bind,
 	.unbind		= fsg_unbind,
 	.disconnect	= fsg_disconnect,
 	.setup		= fsg_setup,
@@ -3583,7 +3582,7 @@ static int __init fsg_init(void)
 	if ((rc = fsg_alloc()) != 0)
 		return rc;
 	fsg = the_fsg;
-	if ((rc = usb_gadget_register_driver(&fsg_driver)) != 0)
+	if ((rc = usb_gadget_probe_driver(&fsg_driver, fsg_bind)) != 0)
 		kref_put(&fsg->ref, fsg_release);
 	return rc;
 }
diff --git a/drivers/usb/gadget/fsl_qe_udc.c b/drivers/usb/gadget/fsl_qe_udc.c
index 82506ca..9b4f4b5 100644
--- a/drivers/usb/gadget/fsl_qe_udc.c
+++ b/drivers/usb/gadget/fsl_qe_udc.c
@@ -2301,9 +2301,10 @@ static irqreturn_t qe_udc_irq(int irq, void *_udc)
 }
 
 /*-------------------------------------------------------------------------
-	Gadget driver register and unregister.
+	Gadget driver probe and unregister.
  --------------------------------------------------------------------------*/
-int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+		int (*bind)(struct usb_gadget *))
 {
 	int retval;
 	unsigned long flags = 0;
@@ -2314,8 +2315,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 
 	if (!driver || (driver->speed != USB_SPEED_FULL
 			&& driver->speed != USB_SPEED_HIGH)
-			|| !driver->bind || !driver->disconnect
-			|| !driver->setup)
+			|| !bind || !driver->disconnect || !driver->setup)
 		return -EINVAL;
 
 	if (udc_controller->driver)
@@ -2331,7 +2331,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 	udc_controller->gadget.speed = (enum usb_device_speed)(driver->speed);
 	spin_unlock_irqrestore(&udc_controller->lock, flags);
 
-	retval = driver->bind(&udc_controller->gadget);
+	retval = bind(&udc_controller->gadget);
 	if (retval) {
 		dev_err(udc_controller->dev, "bind to %s --> %d",
 				driver->driver.name, retval);
@@ -2352,7 +2352,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 		udc_controller->gadget.name, driver->driver.name);
 	return 0;
 }
-EXPORT_SYMBOL(usb_gadget_register_driver);
+EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 {
diff --git a/drivers/usb/gadget/fsl_udc_core.c b/drivers/usb/gadget/fsl_udc_core.c
index 08a9a62..c16b402 100644
--- a/drivers/usb/gadget/fsl_udc_core.c
+++ b/drivers/usb/gadget/fsl_udc_core.c
@@ -1765,7 +1765,8 @@ static irqreturn_t fsl_udc_irq(int irq, void *_udc)
  * Hook to gadget drivers
  * Called by initialization code of gadget drivers
 *----------------------------------------------------------------*/
-int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+		int (*bind)(struct usb_gadget *))
 {
 	int retval = -ENODEV;
 	unsigned long flags = 0;
@@ -1775,8 +1776,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 
 	if (!driver || (driver->speed != USB_SPEED_FULL
 				&& driver->speed != USB_SPEED_HIGH)
-			|| !driver->bind || !driver->disconnect
-			|| !driver->setup)
+			|| !bind || !driver->disconnect || !driver->setup)
 		return -EINVAL;
 
 	if (udc_controller->driver)
@@ -1792,7 +1792,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 	spin_unlock_irqrestore(&udc_controller->lock, flags);
 
 	/* bind udc driver to gadget driver */
-	retval = driver->bind(&udc_controller->gadget);
+	retval = bind(&udc_controller->gadget);
 	if (retval) {
 		VDBG("bind to %s --> %d", driver->driver.name, retval);
 		udc_controller->gadget.dev.driver = NULL;
@@ -1814,7 +1814,7 @@ out:
 		       retval);
 	return retval;
 }
-EXPORT_SYMBOL(usb_gadget_register_driver);
+EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 /* Disconnect from gadget driver */
 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
diff --git a/drivers/usb/gadget/gmidi.c b/drivers/usb/gadget/gmidi.c
index 2b56ce6..b33ee5d 100644
--- a/drivers/usb/gadget/gmidi.c
+++ b/drivers/usb/gadget/gmidi.c
@@ -1292,7 +1292,6 @@ static void gmidi_resume(struct usb_gadget *gadget)
 static struct usb_gadget_driver gmidi_driver = {
 	.speed		= USB_SPEED_FULL,
 	.function	= (char *)longname,
-	.bind		= gmidi_bind,
 	.unbind		= gmidi_unbind,
 
 	.setup		= gmidi_setup,
@@ -1309,7 +1308,7 @@ static struct usb_gadget_driver gmidi_driver = {
 
 static int __init gmidi_init(void)
 {
-	return usb_gadget_register_driver(&gmidi_driver);
+	return usb_gadget_probe_driver(&gmidi_driver, gmidi_bind);
 }
 module_init(gmidi_init);
 
diff --git a/drivers/usb/gadget/goku_udc.c b/drivers/usb/gadget/goku_udc.c
index 1088d08..49fbd4d 100644
--- a/drivers/usb/gadget/goku_udc.c
+++ b/drivers/usb/gadget/goku_udc.c
@@ -1343,14 +1343,15 @@ static struct goku_udc	*the_controller;
  * disconnect is reported.  then a host may connect again, or
  * the driver might get unbound.
  */
-int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+		int (*bind)(struct usb_gadget *))
 {
 	struct goku_udc	*dev = the_controller;
 	int			retval;
 
 	if (!driver
 			|| driver->speed < USB_SPEED_FULL
-			|| !driver->bind
+			|| !bind
 			|| !driver->disconnect
 			|| !driver->setup)
 		return -EINVAL;
@@ -1363,7 +1364,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 	driver->driver.bus = NULL;
 	dev->driver = driver;
 	dev->gadget.dev.driver = &driver->driver;
-	retval = driver->bind(&dev->gadget);
+	retval = bind(&dev->gadget);
 	if (retval) {
 		DBG(dev, "bind to driver %s --> error %d\n",
 				driver->driver.name, retval);
@@ -1380,7 +1381,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 	DBG(dev, "registered gadget driver '%s'\n", driver->driver.name);
 	return 0;
 }
-EXPORT_SYMBOL(usb_gadget_register_driver);
+EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 static void
 stop_activity(struct goku_udc *dev, struct usb_gadget_driver *driver)
diff --git a/drivers/usb/gadget/imx_udc.c b/drivers/usb/gadget/imx_udc.c
index e743122..ed02664 100644
--- a/drivers/usb/gadget/imx_udc.c
+++ b/drivers/usb/gadget/imx_udc.c
@@ -1319,14 +1319,15 @@ static struct imx_udc_struct controller = {
  * USB gadged driver functions
  *******************************************************************************
  */
-int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+		int (*bind)(struct usb_gadget *))
 {
 	struct imx_udc_struct *imx_usb = &controller;
 	int retval;
 
 	if (!driver
 		|| driver->speed < USB_SPEED_FULL
-		|| !driver->bind
+		|| !bind
 		|| !driver->disconnect
 		|| !driver->setup)
 			return -EINVAL;
@@ -1342,7 +1343,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 	retval = device_add(&imx_usb->gadget.dev);
 	if (retval)
 		goto fail;
-	retval = driver->bind(&imx_usb->gadget);
+	retval = bind(&imx_usb->gadget);
 	if (retval) {
 		D_ERR(imx_usb->dev, "<%s> bind to driver %s --> error %d\n",
 			__func__, driver->driver.name, retval);
@@ -1362,7 +1363,7 @@ fail:
 	imx_usb->gadget.dev.driver = NULL;
 	return retval;
 }
-EXPORT_SYMBOL(usb_gadget_register_driver);
+EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 {
diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c
index de8a838..1da5583 100644
--- a/drivers/usb/gadget/inode.c
+++ b/drivers/usb/gadget/inode.c
@@ -1777,7 +1777,6 @@ static struct usb_gadget_driver gadgetfs_driver = {
 	.speed		= USB_SPEED_FULL,
 #endif
 	.function	= (char *) driver_desc,
-	.bind		= gadgetfs_bind,
 	.unbind		= gadgetfs_unbind,
 	.setup		= gadgetfs_setup,
 	.disconnect	= gadgetfs_disconnect,
@@ -1800,7 +1799,6 @@ static int gadgetfs_probe (struct usb_gadget *gadget)
 
 static struct usb_gadget_driver probe_driver = {
 	.speed		= USB_SPEED_HIGH,
-	.bind		= gadgetfs_probe,
 	.unbind		= gadgetfs_nop,
 	.setup		= (void *)gadgetfs_nop,
 	.disconnect	= gadgetfs_nop,
@@ -1914,7 +1912,7 @@ dev_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
 
 	/* triggers gadgetfs_bind(); then we can enumerate. */
 	spin_unlock_irq (&dev->lock);
-	value = usb_gadget_register_driver (&gadgetfs_driver);
+	value = usb_gadget_probe_driver(&gadgetfs_driver, gadgetfs_bind);
 	if (value != 0) {
 		kfree (dev->buf);
 		dev->buf = NULL;
@@ -2053,7 +2051,7 @@ gadgetfs_fill_super (struct super_block *sb, void *opts, int silent)
 		return -ESRCH;
 
 	/* fake probe to determine $CHIP */
-	(void) usb_gadget_register_driver (&probe_driver);
+	(void) usb_gadget_probe_driver(&probe_driver, gadgetfs_probe);
 	if (!CHIP)
 		return -ENODEV;
 
diff --git a/drivers/usb/gadget/langwell_udc.c b/drivers/usb/gadget/langwell_udc.c
index a391351..e7222de 100644
--- a/drivers/usb/gadget/langwell_udc.c
+++ b/drivers/usb/gadget/langwell_udc.c
@@ -1807,7 +1807,8 @@ static DEVICE_ATTR(langwell_udc, S_IRUGO, show_langwell_udc, NULL);
  * the driver might get unbound.
  */
 
-int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+		int (*bind)(struct usb_gadget *))
 {
 	struct langwell_udc	*dev = the_controller;
 	unsigned long		flags;
@@ -1830,7 +1831,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 
 	spin_unlock_irqrestore(&dev->lock, flags);
 
-	retval = driver->bind(&dev->gadget);
+	retval = bind(&dev->gadget);
 	if (retval) {
 		DBG(dev, "bind to driver %s --> %d\n",
 				driver->driver.name, retval);
@@ -1868,7 +1869,7 @@ err_unbind:
 	DBG(dev, "<--- %s()\n", __func__);
 	return retval;
 }
-EXPORT_SYMBOL(usb_gadget_register_driver);
+EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 
 /* unregister gadget driver */
@@ -1882,7 +1883,7 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 
 	DBG(dev, "---> %s()\n", __func__);
 
-	if (unlikely(!driver || !driver->bind || !driver->unbind))
+	if (unlikely(!driver || !driver->unbind))
 		return -EINVAL;
 
 	/* unbind OTG transceiver */
diff --git a/drivers/usb/gadget/lh7a40x_udc.c b/drivers/usb/gadget/lh7a40x_udc.c
index fded3fc..6b58bd8 100644
--- a/drivers/usb/gadget/lh7a40x_udc.c
+++ b/drivers/usb/gadget/lh7a40x_udc.c
@@ -408,7 +408,8 @@ static void udc_enable(struct lh7a40x_udc *dev)
 /*
   Register entry point for the peripheral controller driver.
 */
-int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+		int (*bind)(struct usb_gadget *))
 {
 	struct lh7a40x_udc *dev = the_controller;
 	int retval;
@@ -417,7 +418,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 
 	if (!driver
 			|| driver->speed != USB_SPEED_FULL
-			|| !driver->bind
+			|| !bind
 			|| !driver->disconnect
 			|| !driver->setup)
 		return -EINVAL;
@@ -431,7 +432,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 	dev->gadget.dev.driver = &driver->driver;
 
 	device_add(&dev->gadget.dev);
-	retval = driver->bind(&dev->gadget);
+	retval = bind(&dev->gadget);
 	if (retval) {
 		printk(KERN_WARNING "%s: bind to driver %s --> error %d\n",
 		       dev->gadget.name, driver->driver.name, retval);
@@ -453,8 +454,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 
 	return 0;
 }
-
-EXPORT_SYMBOL(usb_gadget_register_driver);
+EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 /*
   Unregister entry point for the peripheral controller driver.
diff --git a/drivers/usb/gadget/m66592-udc.c b/drivers/usb/gadget/m66592-udc.c
index 166bf71..2ce1f49 100644
--- a/drivers/usb/gadget/m66592-udc.c
+++ b/drivers/usb/gadget/m66592-udc.c
@@ -1454,14 +1454,15 @@ static struct usb_ep_ops m66592_ep_ops = {
 /*-------------------------------------------------------------------------*/
 static struct m66592 *the_controller;
 
-int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+		int (*bind)(struct usb_gadget *))
 {
 	struct m66592 *m66592 = the_controller;
 	int retval;
 
 	if (!driver
 			|| driver->speed != USB_SPEED_HIGH
-			|| !driver->bind
+			|| !bind
 			|| !driver->setup)
 		return -EINVAL;
 	if (!m66592)
@@ -1480,7 +1481,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 		goto error;
 	}
 
-	retval = driver->bind (&m66592->gadget);
+	retval = bind(&m66592->gadget);
 	if (retval) {
 		pr_err("bind to driver error (%d)\n", retval);
 		device_del(&m66592->gadget.dev);
@@ -1505,7 +1506,7 @@ error:
 
 	return retval;
 }
-EXPORT_SYMBOL(usb_gadget_register_driver);
+EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 {
diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c
index 9498be8..d09155b 100644
--- a/drivers/usb/gadget/net2280.c
+++ b/drivers/usb/gadget/net2280.c
@@ -1929,7 +1929,8 @@ static void ep0_start (struct net2280 *dev)
  * disconnect is reported.  then a host may connect again, or
  * the driver might get unbound.
  */
-int usb_gadget_register_driver (struct usb_gadget_driver *driver)
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+		int (*bind)(struct usb_gadget *))
 {
 	struct net2280		*dev = the_controller;
 	int			retval;
@@ -1941,8 +1942,7 @@ int usb_gadget_register_driver (struct usb_gadget_driver *driver)
 	 */
 	if (!driver
 			|| driver->speed != USB_SPEED_HIGH
-			|| !driver->bind
-			|| !driver->setup)
+			|| !bind || !driver->setup)
 		return -EINVAL;
 	if (!dev)
 		return -ENODEV;
@@ -1957,7 +1957,7 @@ int usb_gadget_register_driver (struct usb_gadget_driver *driver)
 	driver->driver.bus = NULL;
 	dev->driver = driver;
 	dev->gadget.dev.driver = &driver->driver;
-	retval = driver->bind (&dev->gadget);
+	retval = bind(&dev->gadget);
 	if (retval) {
 		DEBUG (dev, "bind to driver %s --> %d\n",
 				driver->driver.name, retval);
@@ -1993,7 +1993,7 @@ err_unbind:
 	dev->driver = NULL;
 	return retval;
 }
-EXPORT_SYMBOL (usb_gadget_register_driver);
+EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 static void
 stop_activity (struct net2280 *dev, struct usb_gadget_driver *driver)
diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c
index f81e4f0..61d3ca6 100644
--- a/drivers/usb/gadget/omap_udc.c
+++ b/drivers/usb/gadget/omap_udc.c
@@ -2102,7 +2102,8 @@ static inline int machine_without_vbus_sense(void)
 		);
 }
 
-int usb_gadget_register_driver (struct usb_gadget_driver *driver)
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+		int (*bind)(struct usb_gadget *))
 {
 	int		status = -ENODEV;
 	struct omap_ep	*ep;
@@ -2114,8 +2115,7 @@ int usb_gadget_register_driver (struct usb_gadget_driver *driver)
 	if (!driver
 			// FIXME if otg, check:  driver->is_otg
 			|| driver->speed < USB_SPEED_FULL
-			|| !driver->bind
-			|| !driver->setup)
+			|| !bind || !driver->setup)
 		return -EINVAL;
 
 	spin_lock_irqsave(&udc->lock, flags);
@@ -2145,7 +2145,7 @@ int usb_gadget_register_driver (struct usb_gadget_driver *driver)
 	if (udc->dc_clk != NULL)
 		omap_udc_enable_clock(1);
 
-	status = driver->bind (&udc->gadget);
+	status = bind(&udc->gadget);
 	if (status) {
 		DBG("bind to %s --> %d\n", driver->driver.name, status);
 		udc->gadget.dev.driver = NULL;
@@ -2186,7 +2186,7 @@ done:
 		omap_udc_enable_clock(0);
 	return status;
 }
-EXPORT_SYMBOL(usb_gadget_register_driver);
+EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 int usb_gadget_unregister_driver (struct usb_gadget_driver *driver)
 {
diff --git a/drivers/usb/gadget/printer.c b/drivers/usb/gadget/printer.c
index 4c3ac5c..317f113 100644
--- a/drivers/usb/gadget/printer.c
+++ b/drivers/usb/gadget/printer.c
@@ -1542,7 +1542,6 @@ static struct usb_gadget_driver printer_driver = {
 	.speed		= DEVSPEED,
 
 	.function	= (char *) driver_desc,
-	.bind		= printer_bind,
 	.unbind		= printer_unbind,
 
 	.setup		= printer_setup,
@@ -1578,11 +1577,11 @@ init(void)
 		return status;
 	}
 
-	status = usb_gadget_register_driver(&printer_driver);
+	status = usb_gadget_probe_driver(&printer_driver, printer_bind);
 	if (status) {
 		class_destroy(usb_gadget_class);
 		unregister_chrdev_region(g_printer_devno, 1);
-		DBG(dev, "usb_gadget_register_driver %x\n", status);
+		DBG(dev, "usb_gadget_probe_driver %x\n", status);
 	}
 
 	return status;
diff --git a/drivers/usb/gadget/pxa25x_udc.c b/drivers/usb/gadget/pxa25x_udc.c
index be5fb34..b37f92c 100644
--- a/drivers/usb/gadget/pxa25x_udc.c
+++ b/drivers/usb/gadget/pxa25x_udc.c
@@ -1280,14 +1280,15 @@ static void udc_enable (struct pxa25x_udc *dev)
  * disconnect is reported.  then a host may connect again, or
  * the driver might get unbound.
  */
-int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+		int (*bind)(struct usb_gadget *))
 {
 	struct pxa25x_udc	*dev = the_controller;
 	int			retval;
 
 	if (!driver
 			|| driver->speed < USB_SPEED_FULL
-			|| !driver->bind
+			|| !bind
 			|| !driver->disconnect
 			|| !driver->setup)
 		return -EINVAL;
@@ -1308,7 +1309,7 @@ fail:
 		dev->gadget.dev.driver = NULL;
 		return retval;
 	}
-	retval = driver->bind(&dev->gadget);
+	retval = bind(&dev->gadget);
 	if (retval) {
 		DMSG("bind to driver %s --> error %d\n",
 				driver->driver.name, retval);
@@ -1338,7 +1339,7 @@ fail:
 bind_fail:
 	return retval;
 }
-EXPORT_SYMBOL(usb_gadget_register_driver);
+EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 static void
 stop_activity(struct pxa25x_udc *dev, struct usb_gadget_driver *driver)
diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c
index 85b0d89..798d280 100644
--- a/drivers/usb/gadget/pxa27x_udc.c
+++ b/drivers/usb/gadget/pxa27x_udc.c
@@ -1792,8 +1792,9 @@ static void udc_enable(struct pxa_udc *udc)
 }
 
 /**
- * usb_gadget_register_driver - Register gadget driver
+ * usb_gadget_probe_driver - Register gadget driver
  * @driver: gadget driver
+ * @bind: bind function
  *
  * When a driver is successfully registered, it will receive control requests
  * including set_configuration(), which enables non-control requests.  Then
@@ -1805,12 +1806,13 @@ static void udc_enable(struct pxa_udc *udc)
  *
  * Returns 0 if no error, -EINVAL, -ENODEV, -EBUSY otherwise
  */
-int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+		int (*bind)(struct usb_gadget *))
 {
 	struct pxa_udc *udc = the_controller;
 	int retval;
 
-	if (!driver || driver->speed < USB_SPEED_FULL || !driver->bind
+	if (!driver || driver->speed < USB_SPEED_FULL || !bind
 			|| !driver->disconnect || !driver->setup)
 		return -EINVAL;
 	if (!udc)
@@ -1828,7 +1830,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 		dev_err(udc->dev, "device_add error %d\n", retval);
 		goto add_fail;
 	}
-	retval = driver->bind(&udc->gadget);
+	retval = bind(&udc->gadget);
 	if (retval) {
 		dev_err(udc->dev, "bind to driver %s --> error %d\n",
 			driver->driver.name, retval);
@@ -1859,7 +1861,7 @@ add_fail:
 	udc->gadget.dev.driver = NULL;
 	return retval;
 }
-EXPORT_SYMBOL(usb_gadget_register_driver);
+EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 
 /**
diff --git a/drivers/usb/gadget/r8a66597-udc.c b/drivers/usb/gadget/r8a66597-udc.c
index 70a8178..5545d41 100644
--- a/drivers/usb/gadget/r8a66597-udc.c
+++ b/drivers/usb/gadget/r8a66597-udc.c
@@ -1405,14 +1405,15 @@ static struct usb_ep_ops r8a66597_ep_ops = {
 /*-------------------------------------------------------------------------*/
 static struct r8a66597 *the_controller;
 
-int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+		int (*bind)(struct usb_gadget *))
 {
 	struct r8a66597 *r8a66597 = the_controller;
 	int retval;
 
 	if (!driver
 			|| driver->speed != USB_SPEED_HIGH
-			|| !driver->bind
+			|| !bind
 			|| !driver->setup)
 		return -EINVAL;
 	if (!r8a66597)
@@ -1431,7 +1432,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 		goto error;
 	}
 
-	retval = driver->bind(&r8a66597->gadget);
+	retval = bind(&r8a66597->gadget);
 	if (retval) {
 		printk(KERN_ERR "bind to driver error (%d)\n", retval);
 		device_del(&r8a66597->gadget.dev);
@@ -1456,7 +1457,7 @@ error:
 
 	return retval;
 }
-EXPORT_SYMBOL(usb_gadget_register_driver);
+EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 {
diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c
index 26193ec..89f04bc 100644
--- a/drivers/usb/gadget/s3c-hsotg.c
+++ b/drivers/usb/gadget/s3c-hsotg.c
@@ -2478,7 +2478,8 @@ static int s3c_hsotg_corereset(struct s3c_hsotg *hsotg)
 	return 0;
 }
 
-int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+		int (*bind)(struct usb_gadget *))
 {
 	struct s3c_hsotg *hsotg = our_hsotg;
 	int ret;
@@ -2498,7 +2499,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 		dev_err(hsotg->dev, "%s: bad speed\n", __func__);
 	}
 
-	if (!driver->bind || !driver->setup) {
+	if (!bind || !driver->setup) {
 		dev_err(hsotg->dev, "%s: missing entry points\n", __func__);
 		return -EINVAL;
 	}
@@ -2517,7 +2518,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 		goto err;
 	}
 
-	ret = driver->bind(&hsotg->gadget);
+	ret = bind(&hsotg->gadget);
 	if (ret) {
 		dev_err(hsotg->dev, "failed bind %s\n", driver->driver.name);
 
@@ -2641,7 +2642,7 @@ err:
 	hsotg->gadget.dev.driver = NULL;
 	return ret;
 }
-EXPORT_SYMBOL(usb_gadget_register_driver);
+EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 {
diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c
index e724a05..8ddaf02 100644
--- a/drivers/usb/gadget/s3c2410_udc.c
+++ b/drivers/usb/gadget/s3c2410_udc.c
@@ -1628,15 +1628,15 @@ static void s3c2410_udc_enable(struct s3c2410_udc *dev)
 }
 
 /*
- *	usb_gadget_register_driver
+ *	usb_gadget_probe_driver
  */
-int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+		int (*bind)(struct usb_gadget *))
 {
 	struct s3c2410_udc *udc = the_controller;
 	int		retval;
 
-	dprintk(DEBUG_NORMAL, "usb_gadget_register_driver() '%s'\n",
-		driver->driver.name);
+	dprintk(DEBUG_NORMAL, "%s() '%s'\n", __func__, driver->driver.name);
 
 	/* Sanity checks */
 	if (!udc)
@@ -1645,10 +1645,9 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 	if (udc->driver)
 		return -EBUSY;
 
-	if (!driver->bind || !driver->setup
-			|| driver->speed < USB_SPEED_FULL) {
+	if (!bind || !driver->setup || driver->speed < USB_SPEED_FULL) {
 		printk(KERN_ERR "Invalid driver: bind %p setup %p speed %d\n",
-			driver->bind, driver->setup, driver->speed);
+			bind, driver->setup, driver->speed);
 		return -EINVAL;
 	}
 #if defined(MODULE)
@@ -1671,7 +1670,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 	dprintk(DEBUG_NORMAL, "binding gadget driver '%s'\n",
 		driver->driver.name);
 
-	if ((retval = driver->bind (&udc->gadget)) != 0) {
+	if ((retval = bind(&udc->gadget)) != 0) {
 		device_del(&udc->gadget.dev);
 		goto register_error;
 	}
@@ -1686,6 +1685,7 @@ register_error:
 	udc->gadget.dev.driver = NULL;
 	return retval;
 }
+EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 /*
  *	usb_gadget_unregister_driver
@@ -2045,7 +2045,6 @@ static void __exit udc_exit(void)
 }
 
 EXPORT_SYMBOL(usb_gadget_unregister_driver);
-EXPORT_SYMBOL(usb_gadget_register_driver);
 
 module_init(udc_init);
 module_exit(udc_exit);
diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c
index 6fca870..d940e80 100644
--- a/drivers/usb/musb/musb_gadget.c
+++ b/drivers/usb/musb/musb_gadget.c
@@ -1696,9 +1696,11 @@ void musb_gadget_cleanup(struct musb *musb)
  * -ENOMEM no memeory to perform the operation
  *
  * @param driver the gadget driver
+ * @param bind the driver's bind function
  * @return <0 if error, 0 if everything is fine
  */
-int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+		int (*bind)(struct usb_gadget *))
 {
 	int retval;
 	unsigned long flags;
@@ -1706,8 +1708,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 
 	if (!driver
 			|| driver->speed != USB_SPEED_HIGH
-			|| !driver->bind
-			|| !driver->setup)
+			|| !bind || !driver->setup)
 		return -EINVAL;
 
 	/* driver must be initialized to support peripheral mode */
@@ -1735,7 +1736,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 	spin_unlock_irqrestore(&musb->lock, flags);
 
 	if (retval == 0) {
-		retval = driver->bind(&musb->g);
+		retval = bind(&musb->g);
 		if (retval != 0) {
 			DBG(3, "bind to driver %s failed --> %d\n",
 					driver->driver.name, retval);
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index d3ef42d..006412c 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -705,11 +705,6 @@ static inline int usb_gadget_disconnect(struct usb_gadget *gadget)
  * struct usb_gadget_driver - driver for usb 'slave' devices
  * @function: String describing the gadget's function
  * @speed: Highest speed the driver handles.
- * @bind: Invoked when the driver is bound to a gadget, usually
- *	after registering the driver.
- *	At that point, ep0 is fully initialized, and ep_list holds
- *	the currently-available endpoints.
- *	Called in a context that permits sleeping.
  * @setup: Invoked for ep0 control requests that aren't handled by
  *	the hardware level driver. Most calls must be handled by
  *	the gadget driver, including descriptor and configuration
@@ -774,7 +769,6 @@ static inline int usb_gadget_disconnect(struct usb_gadget *gadget)
 struct usb_gadget_driver {
 	char			*function;
 	enum usb_device_speed	speed;
-	int			(*bind)(struct usb_gadget *);
 	void			(*unbind)(struct usb_gadget *);
 	int			(*setup)(struct usb_gadget *,
 					const struct usb_ctrlrequest *);
@@ -798,17 +792,19 @@ struct usb_gadget_driver {
  */
 
 /**
- * usb_gadget_register_driver - register a gadget driver
- * @driver:the driver being registered
+ * usb_gadget_probe_driver - probe a gadget driver
+ * @driver: the driver being registered
+ * @bind: the driver's bind callback
  * Context: can sleep
  *
  * Call this in your gadget driver's module initialization function,
  * to tell the underlying usb controller driver about your driver.
- * The driver's bind() function will be called to bind it to a
- * gadget before this registration call returns.  It's expected that
- * the bind() functions will be in init sections.
+ * The @bind() function will be called to bind it to a gadget before this
+ * registration call returns.  It's expected that the @bind() function will
+ * be in init sections.
  */
-int usb_gadget_register_driver(struct usb_gadget_driver *driver);
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+		int (*bind)(struct usb_gadget *));
 
 /**
  * usb_gadget_unregister_driver - unregister a gadget driver
-- 
1.7.1

[PATCH 2/2] usb gadget: don't save bind callback in struct usb_configuration

[Uwe Kleine-König]

The bind function is only called at init time so there is no need to
save a pointer to it in the driver struct.

This fixes many section mismatches reported by modpost.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Michał Nazarewicz <m.nazarewicz@samsung.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/usb/gadget/audio.c        |    3 +--
 drivers/usb/gadget/cdc2.c         |    3 +--
 drivers/usb/gadget/composite.c    |   14 ++++++++------
 drivers/usb/gadget/ether.c        |    7 +++----
 drivers/usb/gadget/f_loopback.c   |    3 +--
 drivers/usb/gadget/f_sourcesink.c |    3 +--
 drivers/usb/gadget/g_ffs.c        |    9 +++------
 drivers/usb/gadget/hid.c          |    3 +--
 drivers/usb/gadget/mass_storage.c |    3 +--
 drivers/usb/gadget/multi.c        |    6 ++----
 drivers/usb/gadget/nokia.c        |    8 ++++----
 drivers/usb/gadget/serial.c       |    4 ++--
 drivers/usb/gadget/webcam.c       |    4 ++--
 include/linux/usb/composite.h     |    5 +----
 14 files changed, 31 insertions(+), 44 deletions(-)

diff --git a/drivers/usb/gadget/audio.c b/drivers/usb/gadget/audio.c
index a62af7b..eeff9b2 100644
--- a/drivers/usb/gadget/audio.c
+++ b/drivers/usb/gadget/audio.c
@@ -105,7 +105,6 @@ static int __init audio_do_config(struct usb_configuration *c)
 
 static struct usb_configuration audio_config_driver = {
 	.label			= DRIVER_DESC,
-	.bind			= audio_do_config,
 	.bConfigurationValue	= 1,
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
@@ -145,7 +144,7 @@ static int __init audio_bind(struct usb_composite_dev *cdev)
 	strings_dev[STRING_PRODUCT_IDX].id = status;
 	device_desc.iProduct = status;
 
-	status = usb_add_config(cdev, &audio_config_driver);
+	status = usb_add_config(cdev, &audio_config_driver, audio_do_config);
 	if (status < 0)
 		goto fail;
 
diff --git a/drivers/usb/gadget/cdc2.c b/drivers/usb/gadget/cdc2.c
index 928137d..c3d2c86 100644
--- a/drivers/usb/gadget/cdc2.c
+++ b/drivers/usb/gadget/cdc2.c
@@ -151,7 +151,6 @@ static int __init cdc_do_config(struct usb_configuration *c)
 
 static struct usb_configuration cdc_config_driver = {
 	.label			= "CDC Composite (ECM + ACM)",
-	.bind			= cdc_do_config,
 	.bConfigurationValue	= 1,
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
@@ -218,7 +217,7 @@ static int __init cdc_bind(struct usb_composite_dev *cdev)
 	device_desc.iProduct = status;
 
 	/* register our configuration */
-	status = usb_add_config(cdev, &cdc_config_driver);
+	status = usb_add_config(cdev, &cdc_config_driver, cdc_do_config);
 	if (status < 0)
 		goto fail1;
 
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index d07960e..b6cc043 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -470,18 +470,20 @@ done:
  * usb_add_config() - add a configuration to a device.
  * @cdev: wraps the USB gadget
  * @config: the configuration, with bConfigurationValue assigned
+ * @bind: the configuration's bind function
  * Context: single threaded during gadget setup
  *
- * One of the main tasks of a composite driver's bind() routine is to
+ * One of the main tasks of a composite @bind() routine is to
  * add each of the configurations it supports, using this routine.
  *
- * This function returns the value of the configuration's bind(), which
+ * This function returns the value of the configuration's @bind(), which
  * is zero for success else a negative errno value.  Binding configurations
  * assigns global resources including string IDs, and per-configuration
  * resources such as interface IDs and endpoints.
  */
 int usb_add_config(struct usb_composite_dev *cdev,
-		struct usb_configuration *config)
+		struct usb_configuration *config,
+		int (*bind)(struct usb_configuration *))
 {
 	int				status = -EINVAL;
 	struct usb_configuration	*c;
@@ -490,7 +492,7 @@ int usb_add_config(struct usb_composite_dev *cdev,
 			config->bConfigurationValue,
 			config->label, config);
 
-	if (!config->bConfigurationValue || !config->bind)
+	if (!config->bConfigurationValue || !bind)
 		goto done;
 
 	/* Prevent duplicate configuration identifiers */
@@ -507,7 +509,7 @@ int usb_add_config(struct usb_composite_dev *cdev,
 	INIT_LIST_HEAD(&config->functions);
 	config->next_interface_id = 0;
 
-	status = config->bind(config);
+	status = bind(config);
 	if (status < 0) {
 		list_del(&config->list);
 		config->cdev = NULL;
@@ -533,7 +535,7 @@ int usb_add_config(struct usb_composite_dev *cdev,
 		}
 	}
 
-	/* set_alt(), or next config->bind(), sets up
+	/* set_alt(), or next bind(), sets up
 	 * ep->driver_data as needed.
 	 */
 	usb_ep_autoconfig_reset(cdev->gadget);
diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c
index 400f803..cd03bea 100644
--- a/drivers/usb/gadget/ether.c
+++ b/drivers/usb/gadget/ether.c
@@ -251,7 +251,6 @@ static int __init rndis_do_config(struct usb_configuration *c)
 
 static struct usb_configuration rndis_config_driver = {
 	.label			= "RNDIS",
-	.bind			= rndis_do_config,
 	.bConfigurationValue	= 2,
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
@@ -289,7 +288,6 @@ static int __init eth_do_config(struct usb_configuration *c)
 
 static struct usb_configuration eth_config_driver = {
 	/* .label = f(hardware) */
-	.bind			= eth_do_config,
 	.bConfigurationValue	= 1,
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
@@ -373,12 +371,13 @@ static int __init eth_bind(struct usb_composite_dev *cdev)
 
 	/* register our configuration(s); RNDIS first, if it's used */
 	if (has_rndis()) {
-		status = usb_add_config(cdev, &rndis_config_driver);
+		status = usb_add_config(cdev, &rndis_config_driver,
+				rndis_do_config);
 		if (status < 0)
 			goto fail;
 	}
 
-	status = usb_add_config(cdev, &eth_config_driver);
+	status = usb_add_config(cdev, &eth_config_driver, eth_do_config);
 	if (status < 0)
 		goto fail;
 
diff --git a/drivers/usb/gadget/f_loopback.c b/drivers/usb/gadget/f_loopback.c
index e91d1b1..b37960f 100644
--- a/drivers/usb/gadget/f_loopback.c
+++ b/drivers/usb/gadget/f_loopback.c
@@ -349,7 +349,6 @@ static int __init loopback_bind_config(struct usb_configuration *c)
 static struct usb_configuration loopback_driver = {
 	.label		= "loopback",
 	.strings	= loopback_strings,
-	.bind		= loopback_bind_config,
 	.bConfigurationValue = 2,
 	.bmAttributes	= USB_CONFIG_ATT_SELFPOWER,
 	/* .iConfiguration = DYNAMIC */
@@ -382,5 +381,5 @@ int __init loopback_add(struct usb_composite_dev *cdev, bool autoresume)
 		loopback_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
 	}
 
-	return usb_add_config(cdev, &loopback_driver);
+	return usb_add_config(cdev, &loopback_driver, loopback_bind_config);
 }
diff --git a/drivers/usb/gadget/f_sourcesink.c b/drivers/usb/gadget/f_sourcesink.c
index 6d3cc44..e403a53 100644
--- a/drivers/usb/gadget/f_sourcesink.c
+++ b/drivers/usb/gadget/f_sourcesink.c
@@ -498,7 +498,6 @@ unknown:
 static struct usb_configuration sourcesink_driver = {
 	.label		= "source/sink",
 	.strings	= sourcesink_strings,
-	.bind		= sourcesink_bind_config,
 	.setup		= sourcesink_setup,
 	.bConfigurationValue = 3,
 	.bmAttributes	= USB_CONFIG_ATT_SELFPOWER,
@@ -532,5 +531,5 @@ int __init sourcesink_add(struct usb_composite_dev *cdev, bool autoresume)
 		sourcesink_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
 	}
 
-	return usb_add_config(cdev, &sourcesink_driver);
+	return usb_add_config(cdev, &sourcesink_driver, sourcesink_bind_config);
 }
diff --git a/drivers/usb/gadget/g_ffs.c b/drivers/usb/gadget/g_ffs.c
index d1af253..ddae926 100644
--- a/drivers/usb/gadget/g_ffs.c
+++ b/drivers/usb/gadget/g_ffs.c
@@ -151,13 +151,12 @@ static int gfs_do_rndis_config(struct usb_configuration *c);
 
 static struct usb_configuration gfs_rndis_config_driver = {
 	.label			= "FunctionFS + RNDIS",
-	.bind			= gfs_do_rndis_config,
 	.bConfigurationValue	= 1,
 	/* .iConfiguration	= DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
 };
 #  define gfs_add_rndis_config(cdev) \
-	usb_add_config(cdev, &gfs_rndis_config_driver)
+	usb_add_config(cdev, &gfs_rndis_config_driver, gfs_do_rndis_config)
 #else
 #  define gfs_add_rndis_config(cdev) 0
 #endif
@@ -168,13 +167,12 @@ static int gfs_do_ecm_config(struct usb_configuration *c);
 
 static struct usb_configuration gfs_ecm_config_driver = {
 	.label			= "FunctionFS + ECM",
-	.bind			= gfs_do_ecm_config,
 	.bConfigurationValue	= 1,
 	/* .iConfiguration	= DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
 };
 #  define gfs_add_ecm_config(cdev) \
-	usb_add_config(cdev, &gfs_ecm_config_driver)
+	usb_add_config(cdev, &gfs_ecm_config_driver, gfs_do_ecm_config)
 #else
 #  define gfs_add_ecm_config(cdev) 0
 #endif
@@ -185,13 +183,12 @@ static int gfs_do_generic_config(struct usb_configuration *c);
 
 static struct usb_configuration gfs_generic_config_driver = {
 	.label			= "FunctionFS",
-	.bind			= gfs_do_generic_config,
 	.bConfigurationValue	= 2,
 	/* .iConfiguration	= DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
 };
 #  define gfs_add_generic_config(cdev) \
-	usb_add_config(cdev, &gfs_generic_config_driver)
+	usb_add_config(cdev, &gfs_generic_config_driver, gfs_do_generic_config)
 #else
 #  define gfs_add_generic_config(cdev) 0
 #endif
diff --git a/drivers/usb/gadget/hid.c b/drivers/usb/gadget/hid.c
index 7757226..2ce69c6 100644
--- a/drivers/usb/gadget/hid.c
+++ b/drivers/usb/gadget/hid.c
@@ -148,7 +148,6 @@ static int __init do_config(struct usb_configuration *c)
 
 static struct usb_configuration config_driver = {
 	.label			= "HID Gadget",
-	.bind			= do_config,
 	.bConfigurationValue	= 1,
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
@@ -201,7 +200,7 @@ static int __init hid_bind(struct usb_composite_dev *cdev)
 	device_desc.iProduct = status;
 
 	/* register our configuration */
-	status = usb_add_config(cdev, &config_driver);
+	status = usb_add_config(cdev, &config_driver, do_config);
 	if (status < 0)
 		return status;
 
diff --git a/drivers/usb/gadget/mass_storage.c b/drivers/usb/gadget/mass_storage.c
index 705cc1f..21a65a2 100644
--- a/drivers/usb/gadget/mass_storage.c
+++ b/drivers/usb/gadget/mass_storage.c
@@ -165,7 +165,6 @@ static int __init msg_do_config(struct usb_configuration *c)
 
 static struct usb_configuration msg_config_driver = {
 	.label			= "Linux File-Backed Storage",
-	.bind			= msg_do_config,
 	.bConfigurationValue	= 1,
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
@@ -208,7 +207,7 @@ static int __init msg_bind(struct usb_composite_dev *cdev)
 	msg_config_driver.iConfiguration = status;
 
 	/* register our second configuration */
-	status = usb_add_config(cdev, &msg_config_driver);
+	status = usb_add_config(cdev, &msg_config_driver, msg_do_config);
 	if (status < 0)
 		return status;
 
diff --git a/drivers/usb/gadget/multi.c b/drivers/usb/gadget/multi.c
index a930d7f..84c9ab6 100644
--- a/drivers/usb/gadget/multi.c
+++ b/drivers/usb/gadget/multi.c
@@ -181,7 +181,6 @@ static int __init rndis_do_config(struct usb_configuration *c)
 
 static struct usb_configuration rndis_config_driver = {
 	.label			= "Multifunction Composite (RNDIS + MS + ACM)",
-	.bind			= rndis_do_config,
 	.bConfigurationValue	= 2,
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
@@ -217,7 +216,6 @@ static int __init cdc_do_config(struct usb_configuration *c)
 
 static struct usb_configuration cdc_config_driver = {
 	.label			= "Multifunction Composite (CDC + MS + ACM)",
-	.bind			= cdc_do_config,
 	.bConfigurationValue	= 1,
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
@@ -295,14 +293,14 @@ static int __init multi_bind(struct usb_composite_dev *cdev)
 
 #ifdef USB_ETH_RNDIS
 	/* register our first configuration */
-	status = usb_add_config(cdev, &rndis_config_driver);
+	status = usb_add_config(cdev, &rndis_config_driver, rndis_do_config);
 	if (status < 0)
 		goto fail2;
 #endif
 
 #ifdef CONFIG_USB_G_MULTI_CDC
 	/* register our second configuration */
-	status = usb_add_config(cdev, &cdc_config_driver);
+	status = usb_add_config(cdev, &cdc_config_driver, cdc_do_config);
 	if (status < 0)
 		goto fail2;
 #endif
diff --git a/drivers/usb/gadget/nokia.c b/drivers/usb/gadget/nokia.c
index 7d6b66a..a7dda39 100644
--- a/drivers/usb/gadget/nokia.c
+++ b/drivers/usb/gadget/nokia.c
@@ -135,7 +135,6 @@ static int __init nokia_bind_config(struct usb_configuration *c)
 
 static struct usb_configuration nokia_config_500ma_driver = {
 	.label		= "Bus Powered",
-	.bind		= nokia_bind_config,
 	.bConfigurationValue = 1,
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes	= USB_CONFIG_ATT_ONE,
@@ -144,7 +143,6 @@ static struct usb_configuration nokia_config_500ma_driver = {
 
 static struct usb_configuration nokia_config_100ma_driver = {
 	.label		= "Self Powered",
-	.bind		= nokia_bind_config,
 	.bConfigurationValue = 2,
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes	= USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER,
@@ -206,11 +204,13 @@ static int __init nokia_bind(struct usb_composite_dev *cdev)
 	}
 
 	/* finaly register the configuration */
-	status = usb_add_config(cdev, &nokia_config_500ma_driver);
+	status = usb_add_config(cdev, &nokia_config_500ma_driver,
+			nokia_bind_config);
 	if (status < 0)
 		goto err_usb;
 
-	status = usb_add_config(cdev, &nokia_config_100ma_driver);
+	status = usb_add_config(cdev, &nokia_config_100ma_driver,
+			nokia_bind_config);
 	if (status < 0)
 		goto err_usb;
 
diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c
index f46a609..8838f03 100644
--- a/drivers/usb/gadget/serial.c
+++ b/drivers/usb/gadget/serial.c
@@ -155,7 +155,6 @@ static int __init serial_bind_config(struct usb_configuration *c)
 
 static struct usb_configuration serial_config_driver = {
 	/* .label = f(use_acm) */
-	.bind		= serial_bind_config,
 	/* .bConfigurationValue = f(use_acm) */
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes	= USB_CONFIG_ATT_SELFPOWER,
@@ -225,7 +224,8 @@ static int __init gs_bind(struct usb_composite_dev *cdev)
 	}
 
 	/* register our configuration */
-	status = usb_add_config(cdev, &serial_config_driver);
+	status = usb_add_config(cdev, &serial_config_driver,
+			serial_bind_config);
 	if (status < 0)
 		goto fail;
 
diff --git a/drivers/usb/gadget/webcam.c b/drivers/usb/gadget/webcam.c
index f5f3030..79a7230 100644
--- a/drivers/usb/gadget/webcam.c
+++ b/drivers/usb/gadget/webcam.c
@@ -317,7 +317,6 @@ webcam_config_bind(struct usb_configuration *c)
 
 static struct usb_configuration webcam_config_driver = {
 	.label			= webcam_config_label,
-	.bind			= webcam_config_bind,
 	.bConfigurationValue	= 1,
 	.iConfiguration		= 0, /* dynamic */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
@@ -354,7 +353,8 @@ webcam_bind(struct usb_composite_dev *cdev)
 	webcam_config_driver.iConfiguration = ret;
 
 	/* Register our configuration. */
-	if ((ret = usb_add_config(cdev, &webcam_config_driver)) < 0)
+	if ((ret = usb_add_config(cdev, &webcam_config_driver,
+					webcam_config_bind)) < 0)
 		goto error;
 
 	INFO(cdev, "Webcam Video Gadget\n");
diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h
index 139353e..fc750b1 100644
--- a/include/linux/usb/composite.h
+++ b/include/linux/usb/composite.h
@@ -161,8 +161,6 @@ ep_choose(struct usb_gadget *g, struct usb_endpoint_descriptor *hs,
  *	and by language IDs provided in control requests.
  * @descriptors: Table of descriptors preceding all function descriptors.
  *	Examples include OTG and vendor-specific descriptors.
- * @bind: Called from @usb_add_config() to allocate resources unique to this
- *	configuration and to call @usb_add_function() for each function used.
  * @unbind: Reverses @bind; called as a side effect of unregistering the
  *	driver which added this configuration.
  * @setup: Used to delegate control requests that aren't handled by standard
@@ -207,8 +205,7 @@ struct usb_configuration {
 	 * we can't restructure things to avoid mismatching...
 	 */
 
-	/* configuration management:  bind/unbind */
-	int			(*bind)(struct usb_configuration *);
+	/* configuration management: unbind/setup */
 	void			(*unbind)(struct usb_configuration *);
 	int			(*setup)(struct usb_configuration *,
 					const struct usb_ctrlrequest *);
-- 
1.7.1

Re: [PATCH] usb gadget: don't save bind callback in struct usb_gadget_driver

[Uwe Kleine-König]

[stripped down Cc: list to annoy fewer people]

On Mon, Aug 02, 2010 at 03:54:40PM -0700, Greg KH wrote:
> On Mon, Aug 02, 2010 at 03:12:48PM +0200, Uwe Kleine-König wrote:
> > On Mon, Aug 02, 2010 at 02:51:36PM +0200, Julia Lawall wrote:
> > > > diff --git a/drivers/usb/gadget/amd5536udc.c b/drivers/usb/gadget/amd5536udc.c
> > > > index 731150d..c266c1e 100644
> > > > --- a/drivers/usb/gadget/amd5536udc.c
> > > > +++ b/drivers/usb/gadget/amd5536udc.c
> > > > @@ -1954,13 +1954,14 @@ static int setup_ep0(struct udc *dev)
> > > >  }
> > > >  
> > > >  /* Called by gadget driver to register itself */
> > > > -int usb_gadget_register_driver(struct usb_gadget_driver *driver)
> > > > +int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
> > > > +		int (*bind)(struct usb_gadget *))
> > > >  {
> > > >  	struct udc		*dev = udc;
> > > >  	int			retval;
> > > >  	u32 tmp;
> > > >  
> > > > -	if (!driver || !driver->bind || !driver->setup
> > > > +	if (!driver || bind || !driver->setup
> > > 
> > > I have the impression that this should be !bind rather than bind.  
> > ah, now I see what you meant.  Obviously you're right.  I fixed it up
> > locally here for now.  Greg, just tell me when/if you need a fixed
> > patch.
> 
> Didn't you already post a "fixed" patch?
Yes, I did:

	http://article.gmane.org/gmane.linux.ports.arm.kernel/86640
	http://article.gmane.org/gmane.linux.kernel/1017575

If you append '/raw' to the URL they should be applicable by
git/quilt/whatever you use.

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |

Re: [PATCH 1/2] usb gadget: don't save bind callback in struct usb_gadget_driver

[Michał Nazarewicz]

On Mon, 02 Aug 2010 20:27:45 +0200, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> wrote:
> diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c
> @@ -2045,7 +2045,6 @@ static void __exit udc_exit(void)
>  }
> EXPORT_SYMBOL(usb_gadget_unregister_driver);
> -EXPORT_SYMBOL(usb_gadget_register_driver);

*IF* you are going to send an updated patch, how about removing
empty line above this EXPORT_SYMBOL().


So for what it's worth the changes look good to me.

-- 
Best regards,                                        _     _
| Humble Liege of Serenely Enlightened Majesty of  o' \,=./ `o
| Computer Science,  Michał "mina86" Nazarewicz       (o o)
+----[mina86*mina86.com]---[mina86*jabber.org]----ooO--(_)--Ooo--

Re: [PATCH 2/2] usb gadget: don't save bind callback in struct usb_configuration

[Michał Nazarewicz]

On Mon, 02 Aug 2010 20:27:46 +0200, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> wrote:

> The bind function is only called at init time so there is no need to
> save a pointer to it in the driver struct.

This is not entirely true.  How about such wording:

   The bind function is often called only at init time so there is no neet
   to save a pointer to it in the configuration structure.

Also note, that if you are fixing composite gadgets as well, there's also
usb_composite_driver structure and accompanying usb_composite_register()
function.

Other then that, for what it's worth, the patch looks good to me.

-- 
Best regards,                                        _     _
| Humble Liege of Serenely Enlightened Majesty of  o' \,=./ `o
| Computer Science,  Michał "mina86" Nazarewicz       (o o)
+----[mina86*mina86.com]---[mina86*jabber.org]----ooO--(_)--Ooo--

Re: [PATCH 1/2] usb gadget: don't save bind callback in struct usb_gadget_driver

[Uwe Kleine-König]

On Thu, Aug 05, 2010 at 10:58:52AM +0200, Michał Nazarewicz wrote:
> On Mon, 02 Aug 2010 20:27:45 +0200, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> wrote:
>> diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c
>> @@ -2045,7 +2045,6 @@ static void __exit udc_exit(void)
>>  }
>> EXPORT_SYMBOL(usb_gadget_unregister_driver);
>> -EXPORT_SYMBOL(usb_gadget_register_driver);
>
> *IF* you are going to send an updated patch, how about removing
> empty line above this EXPORT_SYMBOL().
I kept that, because the '}' doesn't belong to
usb_gadget_unregister_driver.

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |

Re: [PATCH 2/2] usb gadget: don't save bind callback in struct usb_configuration

[Uwe Kleine-König]

On Thu, Aug 05, 2010 at 11:05:47AM +0200, Michał Nazarewicz wrote:
> On Mon, 02 Aug 2010 20:27:46 +0200, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> wrote:
>
>> The bind function is only called at init time so there is no need to
>> save a pointer to it in the driver struct.
>
> This is not entirely true.  How about such wording:
>
>   The bind function is often called only at init time so there is no neet
>   to save a pointer to it in the configuration structure.
OK.

> Also note, that if you are fixing composite gadgets as well, there's also
> usb_composite_driver structure and accompanying usb_composite_register()
> function.
This is ortogonal to my two patches, right?  Will look into it later.

Thanks
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |

[PATCH 2/2 v2] usb gadget: don't save bind callback in struct usb_configuration

[Uwe Kleine-König]

The bind function is most of the time only called at init time so there is no
need to save a pointer to it in the configuration structure.

This fixes many section mismatches reported by modpost.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Michał Nazarewicz <m.nazarewicz@samsung.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
---
changes since v1:

 - reworded commit log as suggested by Michał

 drivers/usb/gadget/audio.c        |    3 +--
 drivers/usb/gadget/cdc2.c         |    3 +--
 drivers/usb/gadget/composite.c    |   14 ++++++++------
 drivers/usb/gadget/ether.c        |    7 +++----
 drivers/usb/gadget/f_loopback.c   |    3 +--
 drivers/usb/gadget/f_sourcesink.c |    3 +--
 drivers/usb/gadget/g_ffs.c        |    9 +++------
 drivers/usb/gadget/hid.c          |    3 +--
 drivers/usb/gadget/mass_storage.c |    3 +--
 drivers/usb/gadget/multi.c        |    6 ++----
 drivers/usb/gadget/nokia.c        |    8 ++++----
 drivers/usb/gadget/serial.c       |    4 ++--
 drivers/usb/gadget/webcam.c       |    4 ++--
 include/linux/usb/composite.h     |    5 +----
 14 files changed, 31 insertions(+), 44 deletions(-)

diff --git a/drivers/usb/gadget/audio.c b/drivers/usb/gadget/audio.c
index a62af7b..eeff9b2 100644
--- a/drivers/usb/gadget/audio.c
+++ b/drivers/usb/gadget/audio.c
@@ -105,7 +105,6 @@ static int __init audio_do_config(struct usb_configuration *c)
 
 static struct usb_configuration audio_config_driver = {
 	.label			= DRIVER_DESC,
-	.bind			= audio_do_config,
 	.bConfigurationValue	= 1,
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
@@ -145,7 +144,7 @@ static int __init audio_bind(struct usb_composite_dev *cdev)
 	strings_dev[STRING_PRODUCT_IDX].id = status;
 	device_desc.iProduct = status;
 
-	status = usb_add_config(cdev, &audio_config_driver);
+	status = usb_add_config(cdev, &audio_config_driver, audio_do_config);
 	if (status < 0)
 		goto fail;
 
diff --git a/drivers/usb/gadget/cdc2.c b/drivers/usb/gadget/cdc2.c
index 928137d..c3d2c86 100644
--- a/drivers/usb/gadget/cdc2.c
+++ b/drivers/usb/gadget/cdc2.c
@@ -151,7 +151,6 @@ static int __init cdc_do_config(struct usb_configuration *c)
 
 static struct usb_configuration cdc_config_driver = {
 	.label			= "CDC Composite (ECM + ACM)",
-	.bind			= cdc_do_config,
 	.bConfigurationValue	= 1,
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
@@ -218,7 +217,7 @@ static int __init cdc_bind(struct usb_composite_dev *cdev)
 	device_desc.iProduct = status;
 
 	/* register our configuration */
-	status = usb_add_config(cdev, &cdc_config_driver);
+	status = usb_add_config(cdev, &cdc_config_driver, cdc_do_config);
 	if (status < 0)
 		goto fail1;
 
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index d07960e..b6cc043 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -470,18 +470,20 @@ done:
  * usb_add_config() - add a configuration to a device.
  * @cdev: wraps the USB gadget
  * @config: the configuration, with bConfigurationValue assigned
+ * @bind: the configuration's bind function
  * Context: single threaded during gadget setup
  *
- * One of the main tasks of a composite driver's bind() routine is to
+ * One of the main tasks of a composite @bind() routine is to
  * add each of the configurations it supports, using this routine.
  *
- * This function returns the value of the configuration's bind(), which
+ * This function returns the value of the configuration's @bind(), which
  * is zero for success else a negative errno value.  Binding configurations
  * assigns global resources including string IDs, and per-configuration
  * resources such as interface IDs and endpoints.
  */
 int usb_add_config(struct usb_composite_dev *cdev,
-		struct usb_configuration *config)
+		struct usb_configuration *config,
+		int (*bind)(struct usb_configuration *))
 {
 	int				status = -EINVAL;
 	struct usb_configuration	*c;
@@ -490,7 +492,7 @@ int usb_add_config(struct usb_composite_dev *cdev,
 			config->bConfigurationValue,
 			config->label, config);
 
-	if (!config->bConfigurationValue || !config->bind)
+	if (!config->bConfigurationValue || !bind)
 		goto done;
 
 	/* Prevent duplicate configuration identifiers */
@@ -507,7 +509,7 @@ int usb_add_config(struct usb_composite_dev *cdev,
 	INIT_LIST_HEAD(&config->functions);
 	config->next_interface_id = 0;
 
-	status = config->bind(config);
+	status = bind(config);
 	if (status < 0) {
 		list_del(&config->list);
 		config->cdev = NULL;
@@ -533,7 +535,7 @@ int usb_add_config(struct usb_composite_dev *cdev,
 		}
 	}
 
-	/* set_alt(), or next config->bind(), sets up
+	/* set_alt(), or next bind(), sets up
 	 * ep->driver_data as needed.
 	 */
 	usb_ep_autoconfig_reset(cdev->gadget);
diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c
index 400f803..cd03bea 100644
--- a/drivers/usb/gadget/ether.c
+++ b/drivers/usb/gadget/ether.c
@@ -251,7 +251,6 @@ static int __init rndis_do_config(struct usb_configuration *c)
 
 static struct usb_configuration rndis_config_driver = {
 	.label			= "RNDIS",
-	.bind			= rndis_do_config,
 	.bConfigurationValue	= 2,
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
@@ -289,7 +288,6 @@ static int __init eth_do_config(struct usb_configuration *c)
 
 static struct usb_configuration eth_config_driver = {
 	/* .label = f(hardware) */
-	.bind			= eth_do_config,
 	.bConfigurationValue	= 1,
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
@@ -373,12 +371,13 @@ static int __init eth_bind(struct usb_composite_dev *cdev)
 
 	/* register our configuration(s); RNDIS first, if it's used */
 	if (has_rndis()) {
-		status = usb_add_config(cdev, &rndis_config_driver);
+		status = usb_add_config(cdev, &rndis_config_driver,
+				rndis_do_config);
 		if (status < 0)
 			goto fail;
 	}
 
-	status = usb_add_config(cdev, &eth_config_driver);
+	status = usb_add_config(cdev, &eth_config_driver, eth_do_config);
 	if (status < 0)
 		goto fail;
 
diff --git a/drivers/usb/gadget/f_loopback.c b/drivers/usb/gadget/f_loopback.c
index e91d1b1..b37960f 100644
--- a/drivers/usb/gadget/f_loopback.c
+++ b/drivers/usb/gadget/f_loopback.c
@@ -349,7 +349,6 @@ static int __init loopback_bind_config(struct usb_configuration *c)
 static struct usb_configuration loopback_driver = {
 	.label		= "loopback",
 	.strings	= loopback_strings,
-	.bind		= loopback_bind_config,
 	.bConfigurationValue = 2,
 	.bmAttributes	= USB_CONFIG_ATT_SELFPOWER,
 	/* .iConfiguration = DYNAMIC */
@@ -382,5 +381,5 @@ int __init loopback_add(struct usb_composite_dev *cdev, bool autoresume)
 		loopback_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
 	}
 
-	return usb_add_config(cdev, &loopback_driver);
+	return usb_add_config(cdev, &loopback_driver, loopback_bind_config);
 }
diff --git a/drivers/usb/gadget/f_sourcesink.c b/drivers/usb/gadget/f_sourcesink.c
index 6d3cc44..e403a53 100644
--- a/drivers/usb/gadget/f_sourcesink.c
+++ b/drivers/usb/gadget/f_sourcesink.c
@@ -498,7 +498,6 @@ unknown:
 static struct usb_configuration sourcesink_driver = {
 	.label		= "source/sink",
 	.strings	= sourcesink_strings,
-	.bind		= sourcesink_bind_config,
 	.setup		= sourcesink_setup,
 	.bConfigurationValue = 3,
 	.bmAttributes	= USB_CONFIG_ATT_SELFPOWER,
@@ -532,5 +531,5 @@ int __init sourcesink_add(struct usb_composite_dev *cdev, bool autoresume)
 		sourcesink_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
 	}
 
-	return usb_add_config(cdev, &sourcesink_driver);
+	return usb_add_config(cdev, &sourcesink_driver, sourcesink_bind_config);
 }
diff --git a/drivers/usb/gadget/g_ffs.c b/drivers/usb/gadget/g_ffs.c
index d1af253..ddae926 100644
--- a/drivers/usb/gadget/g_ffs.c
+++ b/drivers/usb/gadget/g_ffs.c
@@ -151,13 +151,12 @@ static int gfs_do_rndis_config(struct usb_configuration *c);
 
 static struct usb_configuration gfs_rndis_config_driver = {
 	.label			= "FunctionFS + RNDIS",
-	.bind			= gfs_do_rndis_config,
 	.bConfigurationValue	= 1,
 	/* .iConfiguration	= DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
 };
 #  define gfs_add_rndis_config(cdev) \
-	usb_add_config(cdev, &gfs_rndis_config_driver)
+	usb_add_config(cdev, &gfs_rndis_config_driver, gfs_do_rndis_config)
 #else
 #  define gfs_add_rndis_config(cdev) 0
 #endif
@@ -168,13 +167,12 @@ static int gfs_do_ecm_config(struct usb_configuration *c);
 
 static struct usb_configuration gfs_ecm_config_driver = {
 	.label			= "FunctionFS + ECM",
-	.bind			= gfs_do_ecm_config,
 	.bConfigurationValue	= 1,
 	/* .iConfiguration	= DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
 };
 #  define gfs_add_ecm_config(cdev) \
-	usb_add_config(cdev, &gfs_ecm_config_driver)
+	usb_add_config(cdev, &gfs_ecm_config_driver, gfs_do_ecm_config)
 #else
 #  define gfs_add_ecm_config(cdev) 0
 #endif
@@ -185,13 +183,12 @@ static int gfs_do_generic_config(struct usb_configuration *c);
 
 static struct usb_configuration gfs_generic_config_driver = {
 	.label			= "FunctionFS",
-	.bind			= gfs_do_generic_config,
 	.bConfigurationValue	= 2,
 	/* .iConfiguration	= DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
 };
 #  define gfs_add_generic_config(cdev) \
-	usb_add_config(cdev, &gfs_generic_config_driver)
+	usb_add_config(cdev, &gfs_generic_config_driver, gfs_do_generic_config)
 #else
 #  define gfs_add_generic_config(cdev) 0
 #endif
diff --git a/drivers/usb/gadget/hid.c b/drivers/usb/gadget/hid.c
index 7757226..2ce69c6 100644
--- a/drivers/usb/gadget/hid.c
+++ b/drivers/usb/gadget/hid.c
@@ -148,7 +148,6 @@ static int __init do_config(struct usb_configuration *c)
 
 static struct usb_configuration config_driver = {
 	.label			= "HID Gadget",
-	.bind			= do_config,
 	.bConfigurationValue	= 1,
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
@@ -201,7 +200,7 @@ static int __init hid_bind(struct usb_composite_dev *cdev)
 	device_desc.iProduct = status;
 
 	/* register our configuration */
-	status = usb_add_config(cdev, &config_driver);
+	status = usb_add_config(cdev, &config_driver, do_config);
 	if (status < 0)
 		return status;
 
diff --git a/drivers/usb/gadget/mass_storage.c b/drivers/usb/gadget/mass_storage.c
index 705cc1f..21a65a2 100644
--- a/drivers/usb/gadget/mass_storage.c
+++ b/drivers/usb/gadget/mass_storage.c
@@ -165,7 +165,6 @@ static int __init msg_do_config(struct usb_configuration *c)
 
 static struct usb_configuration msg_config_driver = {
 	.label			= "Linux File-Backed Storage",
-	.bind			= msg_do_config,
 	.bConfigurationValue	= 1,
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
@@ -208,7 +207,7 @@ static int __init msg_bind(struct usb_composite_dev *cdev)
 	msg_config_driver.iConfiguration = status;
 
 	/* register our second configuration */
-	status = usb_add_config(cdev, &msg_config_driver);
+	status = usb_add_config(cdev, &msg_config_driver, msg_do_config);
 	if (status < 0)
 		return status;
 
diff --git a/drivers/usb/gadget/multi.c b/drivers/usb/gadget/multi.c
index a930d7f..84c9ab6 100644
--- a/drivers/usb/gadget/multi.c
+++ b/drivers/usb/gadget/multi.c
@@ -181,7 +181,6 @@ static int __init rndis_do_config(struct usb_configuration *c)
 
 static struct usb_configuration rndis_config_driver = {
 	.label			= "Multifunction Composite (RNDIS + MS + ACM)",
-	.bind			= rndis_do_config,
 	.bConfigurationValue	= 2,
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
@@ -217,7 +216,6 @@ static int __init cdc_do_config(struct usb_configuration *c)
 
 static struct usb_configuration cdc_config_driver = {
 	.label			= "Multifunction Composite (CDC + MS + ACM)",
-	.bind			= cdc_do_config,
 	.bConfigurationValue	= 1,
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
@@ -295,14 +293,14 @@ static int __init multi_bind(struct usb_composite_dev *cdev)
 
 #ifdef USB_ETH_RNDIS
 	/* register our first configuration */
-	status = usb_add_config(cdev, &rndis_config_driver);
+	status = usb_add_config(cdev, &rndis_config_driver, rndis_do_config);
 	if (status < 0)
 		goto fail2;
 #endif
 
 #ifdef CONFIG_USB_G_MULTI_CDC
 	/* register our second configuration */
-	status = usb_add_config(cdev, &cdc_config_driver);
+	status = usb_add_config(cdev, &cdc_config_driver, cdc_do_config);
 	if (status < 0)
 		goto fail2;
 #endif
diff --git a/drivers/usb/gadget/nokia.c b/drivers/usb/gadget/nokia.c
index 7d6b66a..a7dda39 100644
--- a/drivers/usb/gadget/nokia.c
+++ b/drivers/usb/gadget/nokia.c
@@ -135,7 +135,6 @@ static int __init nokia_bind_config(struct usb_configuration *c)
 
 static struct usb_configuration nokia_config_500ma_driver = {
 	.label		= "Bus Powered",
-	.bind		= nokia_bind_config,
 	.bConfigurationValue = 1,
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes	= USB_CONFIG_ATT_ONE,
@@ -144,7 +143,6 @@ static struct usb_configuration nokia_config_500ma_driver = {
 
 static struct usb_configuration nokia_config_100ma_driver = {
 	.label		= "Self Powered",
-	.bind		= nokia_bind_config,
 	.bConfigurationValue = 2,
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes	= USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER,
@@ -206,11 +204,13 @@ static int __init nokia_bind(struct usb_composite_dev *cdev)
 	}
 
 	/* finaly register the configuration */
-	status = usb_add_config(cdev, &nokia_config_500ma_driver);
+	status = usb_add_config(cdev, &nokia_config_500ma_driver,
+			nokia_bind_config);
 	if (status < 0)
 		goto err_usb;
 
-	status = usb_add_config(cdev, &nokia_config_100ma_driver);
+	status = usb_add_config(cdev, &nokia_config_100ma_driver,
+			nokia_bind_config);
 	if (status < 0)
 		goto err_usb;
 
diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c
index f46a609..8838f03 100644
--- a/drivers/usb/gadget/serial.c
+++ b/drivers/usb/gadget/serial.c
@@ -155,7 +155,6 @@ static int __init serial_bind_config(struct usb_configuration *c)
 
 static struct usb_configuration serial_config_driver = {
 	/* .label = f(use_acm) */
-	.bind		= serial_bind_config,
 	/* .bConfigurationValue = f(use_acm) */
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes	= USB_CONFIG_ATT_SELFPOWER,
@@ -225,7 +224,8 @@ static int __init gs_bind(struct usb_composite_dev *cdev)
 	}
 
 	/* register our configuration */
-	status = usb_add_config(cdev, &serial_config_driver);
+	status = usb_add_config(cdev, &serial_config_driver,
+			serial_bind_config);
 	if (status < 0)
 		goto fail;
 
diff --git a/drivers/usb/gadget/webcam.c b/drivers/usb/gadget/webcam.c
index f5f3030..79a7230 100644
--- a/drivers/usb/gadget/webcam.c
+++ b/drivers/usb/gadget/webcam.c
@@ -317,7 +317,6 @@ webcam_config_bind(struct usb_configuration *c)
 
 static struct usb_configuration webcam_config_driver = {
 	.label			= webcam_config_label,
-	.bind			= webcam_config_bind,
 	.bConfigurationValue	= 1,
 	.iConfiguration		= 0, /* dynamic */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
@@ -354,7 +353,8 @@ webcam_bind(struct usb_composite_dev *cdev)
 	webcam_config_driver.iConfiguration = ret;
 
 	/* Register our configuration. */
-	if ((ret = usb_add_config(cdev, &webcam_config_driver)) < 0)
+	if ((ret = usb_add_config(cdev, &webcam_config_driver,
+					webcam_config_bind)) < 0)
 		goto error;
 
 	INFO(cdev, "Webcam Video Gadget\n");
diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h
index 139353e..fc750b1 100644
--- a/include/linux/usb/composite.h
+++ b/include/linux/usb/composite.h
@@ -161,8 +161,6 @@ ep_choose(struct usb_gadget *g, struct usb_endpoint_descriptor *hs,
  *	and by language IDs provided in control requests.
  * @descriptors: Table of descriptors preceding all function descriptors.
  *	Examples include OTG and vendor-specific descriptors.
- * @bind: Called from @usb_add_config() to allocate resources unique to this
- *	configuration and to call @usb_add_function() for each function used.
  * @unbind: Reverses @bind; called as a side effect of unregistering the
  *	driver which added this configuration.
  * @setup: Used to delegate control requests that aren't handled by standard
@@ -207,8 +205,7 @@ struct usb_configuration {
 	 * we can't restructure things to avoid mismatching...
 	 */
 
-	/* configuration management:  bind/unbind */
-	int			(*bind)(struct usb_configuration *);
+	/* configuration management: unbind/setup */
 	void			(*unbind)(struct usb_configuration *);
 	int			(*setup)(struct usb_configuration *,
 					const struct usb_ctrlrequest *);
-- 
1.7.1

Re: [PATCH 2/2] usb gadget: don't save bind callback in struct usb_configuration

[Michał Nazarewicz]

> On Thu, Aug 05, 2010 at 11:05:47AM +0200, Michał Nazarewicz wrote:
>> Also note, that if you are fixing composite gadgets as well, there's also
>> usb_composite_driver structure and accompanying usb_composite_register()
>> function.

On Thu, 05 Aug 2010 11:45:46 +0200, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> wrote:
> This is ortogonal to my two patches, right?  Will look into it later.

Yep.

-- 
Best regards,                                        _     _
| Humble Liege of Serenely Enlightened Majesty of  o' \,=./ `o
| Computer Science,  Michał "mina86" Nazarewicz       (o o)
+----[mina86*mina86.com]---[mina86*jabber.org]----ooO--(_)--Ooo--

Re: [PATCH 1/2] usb gadget: don't save bind callback in struct usb_gadget_driver

[Michał Nazarewicz]

On Thu, 05 Aug 2010 11:39:54 +0200, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> wrote:

> On Thu, Aug 05, 2010 at 10:58:52AM +0200, Michał Nazarewicz wrote:
>> On Mon, 02 Aug 2010 20:27:45 +0200, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> wrote:
>>> diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c
>>> @@ -2045,7 +2045,6 @@ static void __exit udc_exit(void)
>>>  }
>>> EXPORT_SYMBOL(usb_gadget_unregister_driver);
>>> -EXPORT_SYMBOL(usb_gadget_register_driver);
>>
>> *IF* you are going to send an updated patch, how about removing
>> empty line above this EXPORT_SYMBOL().

> I kept that, because the '}' doesn't belong to
> usb_gadget_unregister_driver.

In that case disregard my last comment. Move along, nothing to see. ;)

-- 
Best regards,                                        _     _
| Humble Liege of Serenely Enlightened Majesty of  o' \,=./ `o
| Computer Science,  Michał "mina86" Nazarewicz       (o o)
+----[mina86*mina86.com]---[mina86*jabber.org]----ooO--(_)--Ooo--

Re: [PATCH 2/2 v2] usb gadget: don't save bind callback in struct usb_configuration

[Greg KH]

On Thu, Aug 05, 2010 at 11:50:17AM +0200, Uwe Kleine-König wrote:
> The bind function is most of the time only called at init time so there is no
> need to save a pointer to it in the configuration structure.
> 
> This fixes many section mismatches reported by modpost.
> 
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
> Cc: Michał Nazarewicz <m.nazarewicz@samsung.com>
> Cc: Greg Kroah-Hartman <gregkh@suse.de>
> ---
> changes since v1:

I'm confused, can you resend what you want me to apply please?

Do I need to drop Michał's patch before applying yours?

thanks,

greg k-h

Re: [PATCH 2/2 v2] usb gadget: don't save bind callback in struct usb_configuration

[Uwe Kleine-König]

On Thu, Aug 05, 2010 at 03:34:35PM -0700, Greg KH wrote:
> On Thu, Aug 05, 2010 at 11:50:17AM +0200, Uwe Kleine-König wrote:
> > The bind function is most of the time only called at init time so there is no
> > need to save a pointer to it in the configuration structure.
> > 
> > This fixes many section mismatches reported by modpost.
> > 
> > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
> > Cc: Michał Nazarewicz <m.nazarewicz@samsung.com>
> > Cc: Greg Kroah-Hartman <gregkh@suse.de>
> > ---
> > changes since v1:
> 
> I'm confused, can you resend what you want me to apply please?
Will do.
 
> Do I need to drop Michał's patch before applying yours?
I double checked that now, and there is one thing in Michał's patch that
is not fixed in mine.  It's the hunk for drivers/usb/gadget/zero.c, as I
didn't touch struct usb_composite_driver yet.  So expect three patches
in reply to this mail.

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |

Re: [PATCH 2/2 v2] usb gadget: don't save bind callback in struct usb_configuration

[Michał Nazarewicz]

On Fri, 06 Aug 2010 00:34:35 +0200, Greg KH <greg@kroah.com> wrote:

> On Thu, Aug 05, 2010 at 11:50:17AM +0200, Uwe Kleine-König wrote:
>> The bind function is most of the time only called at init time so there is no
>> need to save a pointer to it in the configuration structure.
>>
>> This fixes many section mismatches reported by modpost.
>>
>> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
>> Cc: Michał Nazarewicz <m.nazarewicz@samsung.com>
>> Cc: Greg Kroah-Hartman <gregkh@suse.de>
>> ---
>> changes since v1:
>
> I'm confused, can you resend what you want me to apply please?
>
> Do I need to drop Michał's patch before applying yours?

Yep.  Uwe's patches seem to be a better solution for fixing the section
mismatch.  They remove the need of __ref* tags.  I looked through them
and they seem fine to me.

(Also, as I realised a minute ago, my patch is incorrect.)

-- 
Best regards,                                        _     _
| Humble Liege of Serenely Enlightened Majesty of  o' \,=./ `o
| Computer Science,  Michał "mina86" Nazarewicz       (o o)
+----[mina86*mina86.com]---[mina86*jabber.org]----ooO--(_)--Ooo--