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Date: Wed, 29 Mar 2017 12:43:30 -0500 From: Christopher Bostic <cbostic@...ux.vnet.ibm.com> To: robh+dt@...nel.org, mark.rutland@....com, linux@...linux.org.uk, rostedt@...dmis.org, mingo@...hat.com, gregkh@...uxfoundation.org, devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org Cc: Chris Bostic <cbostic@...ux.vnet.ibm.com>, joel@....id.au, linux-kernel@...r.kernel.org, andrew@...id.au, alistair@...ple.id.au, benh@...nel.crashing.org Subject: [PATCH v4 13/23] drivers/fsi: Add client driver register utilities From: Chris Bostic <cbostic@...ux.vnet.ibm.com> Add driver_register and driver_unregister wrappers for FSI. Signed-off-by: Chris Bostic <cbostic@...ux.vnet.ibm.com> Signed-off-by: Joel Stanley <joel@....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 */ -- 1.8.2.2
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