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rpmsg: Create the rpmsg class in core instead of in rpmsg char

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Migrate the creation of the rpmsg class from the rpmsg_char
to the core that the class is usable by the rpmsg_char and
the future rpmsg_ctrl module.

Suggested-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220124102524.295783-3-arnaud.pouliquen@foss.st.com
This commit is contained in:
Arnaud Pouliquen 2022-01-24 11:25:15 +01:00 committed by Bjorn Andersson
parent 69265bc12b
commit 608edd9604
3 changed files with 17 additions and 13 deletions
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11
drivers/rpmsg/rpmsg_char.c
View File

@ -27,11 +27,11 @@
#include <uapi/linux/rpmsg.h>
#include "rpmsg_char.h"
#include "rpmsg_internal.h"
#define RPMSG_DEV_MAX (MINORMASK + 1)
static dev_t rpmsg_major;
static struct class *rpmsg_class;
static DEFINE_IDA(rpmsg_ctrl_ida);
static DEFINE_IDA(rpmsg_ept_ida);
@ -550,17 +550,9 @@ static int rpmsg_chrdev_init(void)
return ret;
}
rpmsg_class = class_create(THIS_MODULE, "rpmsg");
if (IS_ERR(rpmsg_class)) {
pr_err("failed to create rpmsg class\n");
unregister_chrdev_region(rpmsg_major, RPMSG_DEV_MAX);
return PTR_ERR(rpmsg_class);
}
ret = register_rpmsg_driver(&rpmsg_chrdev_driver);
if (ret < 0) {
pr_err("failed to register rpmsg driver\n");
class_destroy(rpmsg_class);
unregister_chrdev_region(rpmsg_major, RPMSG_DEV_MAX);
}
@ -571,7 +563,6 @@ postcore_initcall(rpmsg_chrdev_init);
static void rpmsg_chrdev_exit(void)
{
unregister_rpmsg_driver(&rpmsg_chrdev_driver);
class_destroy(rpmsg_class);
unregister_chrdev_region(rpmsg_major, RPMSG_DEV_MAX);
}
module_exit(rpmsg_chrdev_exit);

17
drivers/rpmsg/rpmsg_core.c
View File

@ -20,6 +20,9 @@
#include "rpmsg_internal.h"
struct class *rpmsg_class;
EXPORT_SYMBOL(rpmsg_class);
/**
* rpmsg_create_channel() - create a new rpmsg channel
* using its name and address info.
@ -662,10 +665,17 @@ static int __init rpmsg_init(void)
{
int ret;
ret = bus_register(&rpmsg_bus);
if (ret)
pr_err("failed to register rpmsg bus: %d\n", ret);
rpmsg_class = class_create(THIS_MODULE, "rpmsg");
if (IS_ERR(rpmsg_class)) {
pr_err("failed to create rpmsg class\n");
return PTR_ERR(rpmsg_class);
}
ret = bus_register(&rpmsg_bus);
if (ret) {
pr_err("failed to register rpmsg bus: %d\n", ret);
class_destroy(rpmsg_class);
}
return ret;
}
postcore_initcall(rpmsg_init);
@ -673,6 +683,7 @@ postcore_initcall(rpmsg_init);
static void __exit rpmsg_fini(void)
{
bus_unregister(&rpmsg_bus);
class_destroy(rpmsg_class);
}
module_exit(rpmsg_fini);

2
drivers/rpmsg/rpmsg_internal.h
View File

@ -18,6 +18,8 @@
#define to_rpmsg_device(d) container_of(d, struct rpmsg_device, dev)
#define to_rpmsg_driver(d) container_of(d, struct rpmsg_driver, drv)
extern struct class *rpmsg_class;
/**
* struct rpmsg_device_ops - indirection table for the rpmsg_device operations
* @create_channel: create backend-specific channel, optional