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

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From: Uwe Kleine-König on 5 Aug 2010 06:00

---

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(a)pengutronix.de>
Cc: Michał Nazarewicz <m.nazarewicz(a)samsung.com>
Cc: Greg Kroah-Hartman <gregkh(a)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

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