[PATCH 4/4] usb: ulpi: set mod_name in driver registration
From: Shashank Balaji <hidden>
Date: 2026-07-22 03:31:51
Also in:
linux-usb, lkml
Subsystem:
the rest, ulpi bus, usb subsystem · Maintainers:
Linus Torvalds, Heikki Krogerus, Greg Kroah-Hartman
The driver core only creates the sysfs "module" symlink for a built-in driver when its struct device_driver has mod_name set (see module_add_driver()). This driver left mod_name unset, so its built-in form had no such symlink. Set mod_name to KBUILD_MODNAME during driver registration. Built-in drivers now gain the symlink, while loadable modules are unaffected. Co-developed-by: Rahul Bukte <redacted> Signed-off-by: Rahul Bukte <redacted> Signed-off-by: Shashank Balaji <redacted> --- include/linux/ulpi/driver.h | 4 ++-- drivers/usb/common/ulpi.c | 4 +++- 2 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/include/linux/ulpi/driver.h b/include/linux/ulpi/driver.h
index c668d9c8d876..c899197e0aa8 100644
--- a/include/linux/ulpi/driver.h
+++ b/include/linux/ulpi/driver.h@@ -51,8 +51,8 @@ struct ulpi_driver { /* * use a macro to avoid include chaining to get THIS_MODULE */ -#define ulpi_register_driver(drv) __ulpi_register_driver(drv, THIS_MODULE) -int __ulpi_register_driver(struct ulpi_driver *drv, struct module *module); +#define ulpi_register_driver(drv) __ulpi_register_driver(drv, THIS_MODULE, KBUILD_MODNAME) +int __ulpi_register_driver(struct ulpi_driver *drv, struct module *module, const char *mod_name); void ulpi_unregister_driver(struct ulpi_driver *drv); #define module_ulpi_driver(__ulpi_driver) \
diff --git a/drivers/usb/common/ulpi.c b/drivers/usb/common/ulpi.c
index 7e43429e996e..dec4baca1c53 100644
--- a/drivers/usb/common/ulpi.c
+++ b/drivers/usb/common/ulpi.c@@ -147,15 +147,17 @@ static const struct device_type ulpi_dev_type = { * __ulpi_register_driver - register a driver with the ULPI bus * @drv: driver being registered * @module: ends up being THIS_MODULE + * @mod_name: ends up being KBUILD_MODNAME * * Registers a driver with the ULPI bus. */ -int __ulpi_register_driver(struct ulpi_driver *drv, struct module *module) +int __ulpi_register_driver(struct ulpi_driver *drv, struct module *module, const char *mod_name) { if (!drv->probe) return -EINVAL; drv->driver.owner = module; + drv->driver.mod_name = mod_name; drv->driver.bus = &ulpi_bus; return driver_register(&drv->driver);
--
2.43.0