There is usbdrv_wrap in struct usb_driver and usb_device_driver, it contains device_driver and for_devices. for_devices is used to distinguish between device drivers and interface drivers. Like the is_usb_device(), it tests the type of the device. We can test that if the probe of device_driver is equal to usb_probe_device in is_usb_device_driver(), and then the struct usbdrv_wrap is no longer needed. Clean up struct usbdrv_wrap, use device_driver directly in struct usb_driver and usb_device_driver. This makes the code cleaner. Signed-off-by: Yajun Deng <yajun.deng@xxxxxxxxx> Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> --- v3: Don't extern usb_probe_device, move is_usb_device_driver() to driver.c v2: simplify is_usb_device_driver(). v1: https://lore.kernel.org/all/20231215063101.792991-1-yajun.deng@xxxxxxxxx/ --- drivers/bluetooth/btusb.c | 6 +- drivers/net/can/usb/peak_usb/pcan_usb_core.c | 2 +- .../broadcom/brcm80211/brcmfmac/usb.c | 2 +- drivers/net/wireless/marvell/mwifiex/usb.c | 2 +- drivers/usb/core/driver.c | 59 ++++++++++--------- drivers/usb/core/usb.c | 2 +- drivers/usb/core/usb.h | 8 +-- drivers/usb/misc/onboard_usb_hub.c | 2 +- drivers/usb/serial/bus.c | 2 +- drivers/usb/serial/usb-serial.c | 2 +- drivers/usb/storage/uas.c | 2 +- drivers/usb/usbip/stub_main.c | 8 +-- include/linux/usb.h | 24 +++----- 13 files changed, 53 insertions(+), 68 deletions(-) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index a0a317bac095..c4e0456153d8 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -4799,10 +4799,8 @@ static struct usb_driver btusb_driver = { .disable_hub_initiated_lpm = 1, #ifdef CONFIG_DEV_COREDUMP - .drvwrap = { - .driver = { - .coredump = btusb_coredump, - }, + .driver = { + .coredump = btusb_coredump, }, #endif }; diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_core.c b/drivers/net/can/usb/peak_usb/pcan_usb_core.c index 24ad9f593a77..1efa39e134f4 100644 --- a/drivers/net/can/usb/peak_usb/pcan_usb_core.c +++ b/drivers/net/can/usb/peak_usb/pcan_usb_core.c @@ -1143,7 +1143,7 @@ static void __exit peak_usb_exit(void) int err; /* last chance do send any synchronous commands here */ - err = driver_for_each_device(&peak_usb_driver.drvwrap.driver, NULL, + err = driver_for_each_device(&peak_usb_driver.driver, NULL, NULL, peak_usb_do_device_exit); if (err) pr_err("%s: failed to stop all can devices (err %d)\n", diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c index 2178675ae1a4..0ccf735316c2 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c @@ -1581,7 +1581,7 @@ static int brcmf_usb_reset_device(struct device *dev, void *notused) void brcmf_usb_exit(void) { - struct device_driver *drv = &brcmf_usbdrvr.drvwrap.driver; + struct device_driver *drv = &brcmf_usbdrvr.driver; int ret; brcmf_dbg(USB, "Enter\n"); diff --git a/drivers/net/wireless/marvell/mwifiex/usb.c b/drivers/net/wireless/marvell/mwifiex/usb.c index d3ab9572e711..515e6db410f2 100644 --- a/drivers/net/wireless/marvell/mwifiex/usb.c +++ b/drivers/net/wireless/marvell/mwifiex/usb.c @@ -687,7 +687,7 @@ static struct usb_driver mwifiex_usb_driver = { .suspend = mwifiex_usb_suspend, .resume = mwifiex_usb_resume, .soft_unbind = 1, - .drvwrap.driver = { + .driver = { .coredump = mwifiex_usb_coredump, }, }; diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index 1dc0c0413043..e01b1913d02b 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -189,13 +189,13 @@ static int usb_create_newid_files(struct usb_driver *usb_drv) goto exit; if (usb_drv->probe != NULL) { - error = driver_create_file(&usb_drv->drvwrap.driver, + error = driver_create_file(&usb_drv->driver, &driver_attr_new_id); if (error == 0) { - error = driver_create_file(&usb_drv->drvwrap.driver, + error = driver_create_file(&usb_drv->driver, &driver_attr_remove_id); if (error) - driver_remove_file(&usb_drv->drvwrap.driver, + driver_remove_file(&usb_drv->driver, &driver_attr_new_id); } } @@ -209,9 +209,9 @@ static void usb_remove_newid_files(struct usb_driver *usb_drv) return; if (usb_drv->probe != NULL) { - driver_remove_file(&usb_drv->drvwrap.driver, + driver_remove_file(&usb_drv->driver, &driver_attr_remove_id); - driver_remove_file(&usb_drv->drvwrap.driver, + driver_remove_file(&usb_drv->driver, &driver_attr_new_id); } } @@ -552,7 +552,7 @@ int usb_driver_claim_interface(struct usb_driver *driver, if (!iface->authorized) return -ENODEV; - dev->driver = &driver->drvwrap.driver; + dev->driver = &driver->driver; usb_set_intfdata(iface, data); iface->needs_binding = 0; @@ -615,7 +615,7 @@ void usb_driver_release_interface(struct usb_driver *driver, struct device *dev = &iface->dev; /* this should never happen, don't release something that's not ours */ - if (!dev->driver || dev->driver != &driver->drvwrap.driver) + if (!dev->driver || dev->driver != &driver->driver) return; /* don't release from within disconnect() */ @@ -950,7 +950,7 @@ static int __usb_bus_reprobe_drivers(struct device *dev, void *data) int ret; /* Don't reprobe if current driver isn't usb_generic_driver */ - if (dev->driver != &usb_generic_driver.drvwrap.driver) + if (dev->driver != &usb_generic_driver.driver) return 0; udev = to_usb_device(dev); @@ -964,6 +964,11 @@ static int __usb_bus_reprobe_drivers(struct device *dev, void *data) return 0; } +bool is_usb_device_driver(const struct device_driver *drv) +{ + return drv->probe == usb_probe_device; +} + /** * usb_register_device_driver - register a USB device (not interface) driver * @new_udriver: USB operations for the device driver @@ -983,15 +988,14 @@ int usb_register_device_driver(struct usb_device_driver *new_udriver, if (usb_disabled()) return -ENODEV; - new_udriver->drvwrap.for_devices = 1; - new_udriver->drvwrap.driver.name = new_udriver->name; - new_udriver->drvwrap.driver.bus = &usb_bus_type; - new_udriver->drvwrap.driver.probe = usb_probe_device; - new_udriver->drvwrap.driver.remove = usb_unbind_device; - new_udriver->drvwrap.driver.owner = owner; - new_udriver->drvwrap.driver.dev_groups = new_udriver->dev_groups; + new_udriver->driver.name = new_udriver->name; + new_udriver->driver.bus = &usb_bus_type; + new_udriver->driver.probe = usb_probe_device; + new_udriver->driver.remove = usb_unbind_device; + new_udriver->driver.owner = owner; + new_udriver->driver.dev_groups = new_udriver->dev_groups; - retval = driver_register(&new_udriver->drvwrap.driver); + retval = driver_register(&new_udriver->driver); if (!retval) { pr_info("%s: registered new device driver %s\n", @@ -1023,7 +1027,7 @@ void usb_deregister_device_driver(struct usb_device_driver *udriver) pr_info("%s: deregistering device driver %s\n", usbcore_name, udriver->name); - driver_unregister(&udriver->drvwrap.driver); + driver_unregister(&udriver->driver); } EXPORT_SYMBOL_GPL(usb_deregister_device_driver); @@ -1051,18 +1055,17 @@ int usb_register_driver(struct usb_driver *new_driver, struct module *owner, if (usb_disabled()) return -ENODEV; - new_driver->drvwrap.for_devices = 0; - new_driver->drvwrap.driver.name = new_driver->name; - new_driver->drvwrap.driver.bus = &usb_bus_type; - new_driver->drvwrap.driver.probe = usb_probe_interface; - new_driver->drvwrap.driver.remove = usb_unbind_interface; - new_driver->drvwrap.driver.owner = owner; - new_driver->drvwrap.driver.mod_name = mod_name; - new_driver->drvwrap.driver.dev_groups = new_driver->dev_groups; + new_driver->driver.name = new_driver->name; + new_driver->driver.bus = &usb_bus_type; + new_driver->driver.probe = usb_probe_interface; + new_driver->driver.remove = usb_unbind_interface; + new_driver->driver.owner = owner; + new_driver->driver.mod_name = mod_name; + new_driver->driver.dev_groups = new_driver->dev_groups; spin_lock_init(&new_driver->dynids.lock); INIT_LIST_HEAD(&new_driver->dynids.list); - retval = driver_register(&new_driver->drvwrap.driver); + retval = driver_register(&new_driver->driver); if (retval) goto out; @@ -1077,7 +1080,7 @@ int usb_register_driver(struct usb_driver *new_driver, struct module *owner, return retval; out_newid: - driver_unregister(&new_driver->drvwrap.driver); + driver_unregister(&new_driver->driver); pr_err("%s: error %d registering interface driver %s\n", usbcore_name, retval, new_driver->name); @@ -1102,7 +1105,7 @@ void usb_deregister(struct usb_driver *driver) usbcore_name, driver->name); usb_remove_newid_files(driver); - driver_unregister(&driver->drvwrap.driver); + driver_unregister(&driver->driver); usb_free_dynids(driver); } EXPORT_SYMBOL_GPL(usb_deregister); diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 2a938cf47ccd..dc8d9228a5e7 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -431,7 +431,7 @@ struct usb_interface *usb_find_interface(struct usb_driver *drv, int minor) struct device *dev; argb.minor = minor; - argb.drv = &drv->drvwrap.driver; + argb.drv = &drv->driver; dev = bus_find_device(&usb_bus_type, NULL, &argb, __find_interface); diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h index 60363153fc3f..bfecb50773b6 100644 --- a/drivers/usb/core/usb.h +++ b/drivers/usb/core/usb.h @@ -175,13 +175,7 @@ static inline int is_root_hub(struct usb_device *udev) return (udev->parent == NULL); } -/* Do the same for device drivers and interface drivers. */ - -static inline int is_usb_device_driver(struct device_driver *drv) -{ - return container_of(drv, struct usbdrv_wrap, driver)-> - for_devices; -} +extern bool is_usb_device_driver(const struct device_driver *drv); /* for labeling diagnostics */ extern const char *usbcore_name; diff --git a/drivers/usb/misc/onboard_usb_hub.c b/drivers/usb/misc/onboard_usb_hub.c index c09fb6bd7d7d..0dd2b032c90b 100644 --- a/drivers/usb/misc/onboard_usb_hub.c +++ b/drivers/usb/misc/onboard_usb_hub.c @@ -244,7 +244,7 @@ static void onboard_hub_attach_usb_driver(struct work_struct *work) { int err; - err = driver_attach(&onboard_hub_usbdev_driver.drvwrap.driver); + err = driver_attach(&onboard_hub_usbdev_driver.driver); if (err) pr_err("Failed to attach USB driver: %pe\n", ERR_PTR(err)); } diff --git a/drivers/usb/serial/bus.c b/drivers/usb/serial/bus.c index 3eb8dc3a1a8f..6c812d01b37d 100644 --- a/drivers/usb/serial/bus.c +++ b/drivers/usb/serial/bus.c @@ -113,7 +113,7 @@ static ssize_t new_id_store(struct device_driver *driver, if (retval >= 0 && usb_drv->usb_driver != NULL) retval = usb_store_new_id(&usb_drv->usb_driver->dynids, usb_drv->usb_driver->id_table, - &usb_drv->usb_driver->drvwrap.driver, + &usb_drv->usb_driver->driver, buf, count); return retval; } diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 17b09f03ef84..f1e91eb7f8a4 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -1521,7 +1521,7 @@ int usb_serial_register_drivers(struct usb_serial_driver *const serial_drivers[] /* Now set udriver's id_table and look for matches */ udriver->id_table = id_table; - rc = driver_attach(&udriver->drvwrap.driver); + rc = driver_attach(&udriver->driver); return 0; err_deregister_drivers: diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c index 696bb0b23599..9707f53cfda9 100644 --- a/drivers/usb/storage/uas.c +++ b/drivers/usb/storage/uas.c @@ -1246,7 +1246,7 @@ static struct usb_driver uas_driver = { .suspend = uas_suspend, .resume = uas_resume, .reset_resume = uas_reset_resume, - .drvwrap.driver.shutdown = uas_shutdown, + .driver.shutdown = uas_shutdown, .id_table = uas_usb_ids, }; diff --git a/drivers/usb/usbip/stub_main.c b/drivers/usb/usbip/stub_main.c index 0a6624d37929..79110a69d697 100644 --- a/drivers/usb/usbip/stub_main.c +++ b/drivers/usb/usbip/stub_main.c @@ -377,14 +377,14 @@ static int __init usbip_host_init(void) goto err_usb_register; } - ret = driver_create_file(&stub_driver.drvwrap.driver, + ret = driver_create_file(&stub_driver.driver, &driver_attr_match_busid); if (ret) { pr_err("driver_create_file failed\n"); goto err_create_file; } - ret = driver_create_file(&stub_driver.drvwrap.driver, + ret = driver_create_file(&stub_driver.driver, &driver_attr_rebind); if (ret) { pr_err("driver_create_file failed\n"); @@ -402,10 +402,10 @@ static int __init usbip_host_init(void) static void __exit usbip_host_exit(void) { - driver_remove_file(&stub_driver.drvwrap.driver, + driver_remove_file(&stub_driver.driver, &driver_attr_match_busid); - driver_remove_file(&stub_driver.drvwrap.driver, + driver_remove_file(&stub_driver.driver, &driver_attr_rebind); /* diff --git a/include/linux/usb.h b/include/linux/usb.h index 07556341ba2b..9e52179872a5 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -1143,16 +1143,6 @@ extern ssize_t usb_store_new_id(struct usb_dynids *dynids, extern ssize_t usb_show_dynids(struct usb_dynids *dynids, char *buf); -/** - * struct usbdrv_wrap - wrapper for driver-model structure - * @driver: The driver-model core driver structure. - * @for_devices: Non-zero for device drivers, 0 for interface drivers. - */ -struct usbdrv_wrap { - struct device_driver driver; - int for_devices; -}; - /** * struct usb_driver - identifies USB interface driver to usbcore * @name: The driver name should be unique among USB drivers, @@ -1193,7 +1183,7 @@ struct usbdrv_wrap { * is bound to the driver. * @dynids: used internally to hold the list of dynamically added device * ids for this driver. - * @drvwrap: Driver-model core structure wrapper. + * @driver: The driver-model core driver structure. * @no_dynamic_id: if set to 1, the USB core will not allow dynamic ids to be * added to this driver by preventing the sysfs file from being created. * @supports_autosuspend: if set to 0, the USB core will not allow autosuspend @@ -1241,13 +1231,13 @@ struct usb_driver { const struct attribute_group **dev_groups; struct usb_dynids dynids; - struct usbdrv_wrap drvwrap; + struct device_driver driver; unsigned int no_dynamic_id:1; unsigned int supports_autosuspend:1; unsigned int disable_hub_initiated_lpm:1; unsigned int soft_unbind:1; }; -#define to_usb_driver(d) container_of(d, struct usb_driver, drvwrap.driver) +#define to_usb_driver(d) container_of(d, struct usb_driver, driver) /** * struct usb_device_driver - identifies USB device driver to usbcore @@ -1268,7 +1258,7 @@ struct usb_driver { * on to call the normal usb_choose_configuration(). * @dev_groups: Attributes attached to the device that will be created once it * is bound to the driver. - * @drvwrap: Driver-model core structure wrapper. + * @driver: The driver-model core driver structure. * @id_table: used with @match() to select better matching driver at * probe() time. * @supports_autosuspend: if set to 0, the USB core will not allow autosuspend @@ -1277,7 +1267,7 @@ struct usb_driver { * resume and suspend functions will be called in addition to the driver's * own, so this part of the setup does not need to be replicated. * - * USB drivers must provide all the fields listed above except drvwrap, + * USB drivers must provide all the fields listed above except driver, * match, and id_table. */ struct usb_device_driver { @@ -1293,13 +1283,13 @@ struct usb_device_driver { int (*choose_configuration) (struct usb_device *udev); const struct attribute_group **dev_groups; - struct usbdrv_wrap drvwrap; + struct device_driver driver; const struct usb_device_id *id_table; unsigned int supports_autosuspend:1; unsigned int generic_subclass:1; }; #define to_usb_device_driver(d) container_of(d, struct usb_device_driver, \ - drvwrap.driver) + driver) /** * struct usb_class_driver - identifies a USB driver that wants to use the USB major number -- 2.25.1
