[PATCH v4 13/23] drivers/fsi: Add client driver register utilities
From: Christopher Bostic <hidden>
Date: 2017-03-29 17:44:33
Also in:
linux-devicetree, lkml
Subsystem:
fsi subsystem, the rest · Maintainers:
Eddie James, Linus Torvalds
From: Chris Bostic <redacted> Add driver_register and driver_unregister wrappers for FSI. Signed-off-by: Chris Bostic <redacted> Signed-off-by: Joel Stanley <joel@jms.id.au> --- drivers/fsi/fsi-core.c | 17 +++++++++++++++++ include/linux/fsi.h | 12 ++++++++++++ 2 files changed, 29 insertions(+)
diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c
index 75d2a88..4359e26 100644
--- a/drivers/fsi/fsi-core.c
+++ b/drivers/fsi/fsi-core.c@@ -585,6 +585,23 @@ static int fsi_bus_match(struct device *dev, struct device_driver *drv) return 0; } +int fsi_driver_register(struct fsi_driver *fsi_drv) +{ + if (!fsi_drv) + return -EINVAL; + if (!fsi_drv->id_table) + return -EINVAL; + + return driver_register(&fsi_drv->drv); +} +EXPORT_SYMBOL_GPL(fsi_driver_register); + +void fsi_driver_unregister(struct fsi_driver *fsi_drv) +{ + driver_unregister(&fsi_drv->drv); +} +EXPORT_SYMBOL_GPL(fsi_driver_unregister); + struct bus_type fsi_bus_type = { .name = "fsi", .match = fsi_bus_match,
diff --git a/include/linux/fsi.h b/include/linux/fsi.h
index 66bce48..34f1e9a 100644
--- a/include/linux/fsi.h
+++ b/include/linux/fsi.h@@ -54,6 +54,18 @@ struct fsi_driver { #define to_fsi_dev(devp) container_of(devp, struct fsi_device, dev) #define to_fsi_drv(drvp) container_of(drvp, struct fsi_driver, drv) +extern int fsi_driver_register(struct fsi_driver *fsi_drv); +extern void fsi_driver_unregister(struct fsi_driver *fsi_drv); + +/* module_fsi_driver() - Helper macro for drivers that don't do + * anything special in module init/exit. This eliminates a lot of + * boilerplate. Each module may only use this macro once, and + * calling it replaces module_init() and module_exit() + */ +#define module_fsi_driver(__fsi_driver) \ + module_driver(__fsi_driver, fsi_driver_register, \ + fsi_driver_unregister) + extern struct bus_type fsi_bus_type; #endif /* LINUX_FSI_H */
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1.8.2.2