From 07a18bd716ed5dea336429404b132568cfaaef95 Mon Sep 17 00:00:00 2001 From: Michal Nazarewicz Date: Thu, 12 Aug 2010 17:43:54 +0200 Subject: [PATCH] usb gadget: don't save bind callback in struct usb_composite_driver MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 composite driver structure. This fixes many section mismatches reported by modpost. Signed-off-by: Michał Nazarewicz Acked-by: Uwe Kleine-König Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/audio.c | 3 +-- drivers/usb/gadget/cdc2.c | 3 +-- drivers/usb/gadget/composite.c | 15 +++++++++++---- drivers/usb/gadget/ether.c | 3 +-- drivers/usb/gadget/g_ffs.c | 3 +-- drivers/usb/gadget/hid.c | 3 +-- drivers/usb/gadget/mass_storage.c | 3 +-- drivers/usb/gadget/multi.c | 3 +-- drivers/usb/gadget/nokia.c | 3 +-- drivers/usb/gadget/serial.c | 3 +-- drivers/usb/gadget/webcam.c | 3 +-- drivers/usb/gadget/zero.c | 3 +-- include/linux/usb/composite.h | 19 +++++-------------- 13 files changed, 27 insertions(+), 40 deletions(-) diff --git a/drivers/usb/gadget/audio.c b/drivers/usb/gadget/audio.c index a62af7b5909..5a65fbb4e20 100644 --- a/drivers/usb/gadget/audio.c +++ b/drivers/usb/gadget/audio.c @@ -166,13 +166,12 @@ static struct usb_composite_driver audio_driver = { .name = "g_audio", .dev = &device_desc, .strings = audio_strings, - .bind = audio_bind, .unbind = __exit_p(audio_unbind), }; static int __init init(void) { - return usb_composite_register(&audio_driver); + return usb_composite_probe(&audio_driver, audio_bind); } module_init(init); diff --git a/drivers/usb/gadget/cdc2.c b/drivers/usb/gadget/cdc2.c index 928137d3dbd..1f2a9b1e4f2 100644 --- a/drivers/usb/gadget/cdc2.c +++ b/drivers/usb/gadget/cdc2.c @@ -245,7 +245,6 @@ static struct usb_composite_driver cdc_driver = { .name = "g_cdc", .dev = &device_desc, .strings = dev_strings, - .bind = cdc_bind, .unbind = __exit_p(cdc_unbind), }; @@ -255,7 +254,7 @@ MODULE_LICENSE("GPL"); static int __init init(void) { - return usb_composite_register(&cdc_driver); + return usb_composite_probe(&cdc_driver, cdc_bind); } module_init(init); diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index a3009bf0122..c531a7e05f1 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -40,6 +40,7 @@ #define USB_BUFSIZ 1024 static struct usb_composite_driver *composite; +static int (*composite_gadget_bind)(struct usb_composite_dev *cdev); /* Some systems will need runtime overrides for the product identifers * published in the device descriptor, either numbers or strings or both. @@ -1115,7 +1116,7 @@ static int composite_bind(struct usb_gadget *gadget) * serial number), register function drivers, potentially update * power state and consumption, etc */ - status = composite->bind(cdev); + status = composite_gadget_bind(cdev); if (status < 0) goto fail; @@ -1227,8 +1228,12 @@ static struct usb_gadget_driver composite_driver = { }; /** - * usb_composite_register() - register a composite driver + * usb_composite_probe() - register a composite driver * @driver: the driver to register + * @bind: the callback used to allocate resources that are shared across the + * whole device, such as string IDs, and add its configurations using + * @usb_add_config(). This may fail by returning a negative errno + * value; it should return zero on successful initialization. * Context: single threaded during gadget setup * * This function is used to register drivers using the composite driver @@ -1241,9 +1246,10 @@ static struct usb_gadget_driver composite_driver = { * while it was binding. That would usually be done in order to wait for * some userspace participation. */ -int usb_composite_register(struct usb_composite_driver *driver) +extern int usb_composite_probe(struct usb_composite_driver *driver, + int (*bind)(struct usb_composite_dev *cdev)) { - if (!driver || !driver->dev || !driver->bind || composite) + if (!driver || !driver->dev || !bind || composite) return -EINVAL; if (!driver->iProduct) @@ -1253,6 +1259,7 @@ int usb_composite_register(struct usb_composite_driver *driver) composite_driver.function = (char *) driver->name; composite_driver.driver.name = driver->name; composite = driver; + composite_gadget_bind = bind; return usb_gadget_probe_driver(&composite_driver, composite_bind); } diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c index 400f80372d9..33076bca993 100644 --- a/drivers/usb/gadget/ether.c +++ b/drivers/usb/gadget/ether.c @@ -402,7 +402,6 @@ static struct usb_composite_driver eth_driver = { .name = "g_ether", .dev = &device_desc, .strings = dev_strings, - .bind = eth_bind, .unbind = __exit_p(eth_unbind), }; @@ -412,7 +411,7 @@ MODULE_LICENSE("GPL"); static int __init init(void) { - return usb_composite_register(ð_driver); + return usb_composite_probe(ð_driver, eth_bind); } module_init(init); diff --git a/drivers/usb/gadget/g_ffs.c b/drivers/usb/gadget/g_ffs.c index 52fd3fa0d13..9fcb1587950 100644 --- a/drivers/usb/gadget/g_ffs.c +++ b/drivers/usb/gadget/g_ffs.c @@ -147,7 +147,6 @@ static struct usb_composite_driver gfs_driver = { .name = DRIVER_NAME, .dev = &gfs_dev_desc, .strings = gfs_dev_strings, - .bind = gfs_bind, .unbind = gfs_unbind, .iProduct = DRIVER_DESC, }; @@ -187,7 +186,7 @@ static int functionfs_ready_callback(struct ffs_data *ffs) return -EBUSY; gfs_ffs_data = ffs; - ret = usb_composite_register(&gfs_driver); + ret = usb_composite_probe(&gfs_driver, gfs_bind); if (unlikely(ret < 0)) clear_bit(0, &gfs_registered); return ret; diff --git a/drivers/usb/gadget/hid.c b/drivers/usb/gadget/hid.c index 775722686ed..77f495212fb 100644 --- a/drivers/usb/gadget/hid.c +++ b/drivers/usb/gadget/hid.c @@ -256,7 +256,6 @@ static struct usb_composite_driver hidg_driver = { .name = "g_hid", .dev = &device_desc, .strings = dev_strings, - .bind = hid_bind, .unbind = __exit_p(hid_unbind), }; @@ -282,7 +281,7 @@ static int __init hidg_init(void) if (status < 0) return status; - status = usb_composite_register(&hidg_driver); + status = usb_composite_probe(&hidg_driver, hid_bind); if (status < 0) platform_driver_unregister(&hidg_plat_driver); diff --git a/drivers/usb/gadget/mass_storage.c b/drivers/usb/gadget/mass_storage.c index 05e9bd33034..a5e4a777d92 100644 --- a/drivers/usb/gadget/mass_storage.c +++ b/drivers/usb/gadget/mass_storage.c @@ -169,7 +169,6 @@ static int __init msg_bind(struct usb_composite_dev *cdev) static struct usb_composite_driver msg_driver = { .name = "g_mass_storage", .dev = &msg_device_desc, - .bind = msg_bind, .iProduct = DRIVER_DESC, .needs_serial = 1, }; @@ -180,7 +179,7 @@ MODULE_LICENSE("GPL"); static int __init msg_init(void) { - return usb_composite_register(&msg_driver); + return usb_composite_probe(&msg_driver, msg_bind); } module_init(msg_init); diff --git a/drivers/usb/gadget/multi.c b/drivers/usb/gadget/multi.c index ca51661d71d..91170a02a9a 100644 --- a/drivers/usb/gadget/multi.c +++ b/drivers/usb/gadget/multi.c @@ -353,7 +353,6 @@ static struct usb_composite_driver multi_driver = { .name = "g_multi", .dev = &device_desc, .strings = dev_strings, - .bind = multi_bind, .unbind = __exit_p(multi_unbind), .iProduct = DRIVER_DESC, .needs_serial = 1, @@ -362,7 +361,7 @@ static struct usb_composite_driver multi_driver = { static int __init multi_init(void) { - return usb_composite_register(&multi_driver); + return usb_composite_probe(&multi_driver, multi_bind); } module_init(multi_init); diff --git a/drivers/usb/gadget/nokia.c b/drivers/usb/gadget/nokia.c index 7d6b66a8572..8aec728882a 100644 --- a/drivers/usb/gadget/nokia.c +++ b/drivers/usb/gadget/nokia.c @@ -241,13 +241,12 @@ static struct usb_composite_driver nokia_driver = { .name = "g_nokia", .dev = &device_desc, .strings = dev_strings, - .bind = nokia_bind, .unbind = __exit_p(nokia_unbind), }; static int __init nokia_init(void) { - return usb_composite_register(&nokia_driver); + return usb_composite_probe(&nokia_driver, nokia_bind); } module_init(nokia_init); diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c index f46a60962da..0b81d7b741d 100644 --- a/drivers/usb/gadget/serial.c +++ b/drivers/usb/gadget/serial.c @@ -242,7 +242,6 @@ static struct usb_composite_driver gserial_driver = { .name = "g_serial", .dev = &device_desc, .strings = dev_strings, - .bind = gs_bind, }; static int __init init(void) @@ -271,7 +270,7 @@ static int __init init(void) } strings_dev[STRING_DESCRIPTION_IDX].s = serial_config_driver.label; - return usb_composite_register(&gserial_driver); + return usb_composite_probe(&gserial_driver, gs_bind); } module_init(init); diff --git a/drivers/usb/gadget/webcam.c b/drivers/usb/gadget/webcam.c index 288d21155ab..de65b8078e0 100644 --- a/drivers/usb/gadget/webcam.c +++ b/drivers/usb/gadget/webcam.c @@ -373,14 +373,13 @@ static struct usb_composite_driver webcam_driver = { .name = "g_webcam", .dev = &webcam_device_descriptor, .strings = webcam_device_strings, - .bind = webcam_bind, .unbind = webcam_unbind, }; static int __init webcam_init(void) { - return usb_composite_register(&webcam_driver); + return usb_composite_probe(&webcam_driver, webcam_bind); } static void __exit diff --git a/drivers/usb/gadget/zero.c b/drivers/usb/gadget/zero.c index 807280d069f..6d16db9d9d2 100644 --- a/drivers/usb/gadget/zero.c +++ b/drivers/usb/gadget/zero.c @@ -340,7 +340,6 @@ static struct usb_composite_driver zero_driver = { .name = "zero", .dev = &device_desc, .strings = dev_strings, - .bind = zero_bind, .unbind = zero_unbind, .suspend = zero_suspend, .resume = zero_resume, @@ -351,7 +350,7 @@ MODULE_LICENSE("GPL"); static int __init init(void) { - return usb_composite_register(&zero_driver); + return usb_composite_probe(&zero_driver, zero_bind); } module_init(init); diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index a78e813d27e..e28b6626802 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -248,11 +248,7 @@ int usb_add_config(struct usb_composite_dev *, * and language IDs provided in control requests * @needs_serial: set to 1 if the gadget needs userspace to provide * a serial number. If one is not provided, warning will be printed. - * @bind: (REQUIRED) Used to allocate resources that are shared across the - * whole device, such as string IDs, and add its configurations using - * @usb_add_config(). This may fail by returning a negative errno - * value; it should return zero on successful initialization. - * @unbind: Reverses @bind(); called as a side effect of unregistering + * @unbind: Reverses bind; called as a side effect of unregistering * this driver. * @disconnect: optional driver disconnect method * @suspend: Notifies when the host stops sending USB traffic, @@ -263,7 +259,7 @@ int usb_add_config(struct usb_composite_dev *, * Devices default to reporting self powered operation. Devices which rely * on bus powered operation should report this in their @bind() method. * - * Before returning from @bind, various fields in the template descriptor + * Before returning from bind, various fields in the template descriptor * may be overridden. These include the idVendor/idProduct/bcdDevice values * normally to bind the appropriate host side driver, and the three strings * (iManufacturer, iProduct, iSerialNumber) normally used to provide user @@ -279,12 +275,6 @@ struct usb_composite_driver { struct usb_gadget_strings **strings; unsigned needs_serial:1; - /* REVISIT: bind() functions can be marked __init, which - * makes trouble for section mismatch analysis. See if - * we can't restructure things to avoid mismatching... - */ - - int (*bind)(struct usb_composite_dev *); int (*unbind)(struct usb_composite_dev *); void (*disconnect)(struct usb_composite_dev *); @@ -294,8 +284,9 @@ struct usb_composite_driver { void (*resume)(struct usb_composite_dev *); }; -extern int usb_composite_register(struct usb_composite_driver *); -extern void usb_composite_unregister(struct usb_composite_driver *); +extern int usb_composite_probe(struct usb_composite_driver *driver, + int (*bind)(struct usb_composite_dev *cdev)); +extern void usb_composite_unregister(struct usb_composite_driver *driver); /** -- 2.20.1