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Subject[PATCH 3/4] rpmsg: add helper macro module_rpmsg_driver
Date
This patch introduces the module_rpmsg_driver macro which is a
convenience macro for rpmsg driver modules similar to
module_platform_driver. It is intended to be used by drivers which
init/exit section does nothing but register/unregister the rpmsg driver.
By using this macro it is possible to eliminate a few lines of
boilerplate code per rpmsg driver.

Signed-off-by: Andrew F. Davis <afd@ti.com>
---
include/linux/rpmsg.h | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/include/linux/rpmsg.h b/include/linux/rpmsg.h
index 78e45ce..ada50ff 100644
--- a/include/linux/rpmsg.h
+++ b/include/linux/rpmsg.h
@@ -177,13 +177,23 @@ struct rpmsg_endpoint *rpmsg_create_ept(struct rpmsg_channel *,
int
rpmsg_send_offchannel_raw(struct rpmsg_channel *, u32, u32, void *, int, bool);

-/*
- * use a macro to avoid include chaining to get THIS_MODULE
- */
+/* use a macro to avoid include chaining to get THIS_MODULE */
#define register_rpmsg_driver(drv) \
__register_rpmsg_driver(drv, THIS_MODULE)

/**
+ * module_rpmsg_driver() - Helper macro for registering an rpmsg driver
+ * @__rpmsg_driver: rpmsg_driver struct
+ *
+ * Helper macro for rpmsg drivers which do not 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_rpmsg_driver(__rpmsg_driver) \
+ module_driver(__rpmsg_driver, register_rpmsg_driver, \
+ unregister_rpmsg_driver)
+
+/**
* rpmsg_send() - send a message across to the remote processor
* @rpdev: the rpmsg channel
* @data: payload of message
--
2.8.2
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