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staging: fieldbus: make controller_class constant 

Now that the driver core allows for struct class to be in read-only
memory, making all 'class' structures to be declared at build time
placing them into read-only memory, instead of having to be dynamically
allocated at load time.

Cc: Sven Van Asbroeck <TheSven73@gmail.com>
Link: https://lore.kernel.org/r/2023100552-entrench-dingbat-093a@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2023-10-05 15:43:53 +02:00
parent 06d0b81188
commit 9565794b1b
1 changed files with 10 additions and 7 deletions
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17
drivers/staging/fieldbus/anybuss/arcx-anybus.c
View File

@ -218,7 +218,10 @@ static const struct regulator_desc can_power_desc = {
.ops = &can_power_ops,
};
static struct class *controller_class;
static const struct class controller_class = {
.name = "arcx_anybus_controller",
};
static DEFINE_IDA(controller_index_ida);
static int controller_probe(struct platform_device *pdev)
@ -301,7 +304,7 @@ static int controller_probe(struct platform_device *pdev)
err = -ENOMEM;
goto out_ida;
}
cd->class_dev->class = controller_class;
cd->class_dev->class = &controller_class;
cd->class_dev->groups = controller_attribute_groups;
cd->class_dev->parent = dev;
cd->class_dev->id = id;
@ -351,12 +354,12 @@ static int __init controller_init(void)
{
int err;
controller_class = class_create("arcx_anybus_controller");
if (IS_ERR(controller_class))
return PTR_ERR(controller_class);
err = class_register(&controller_class);
if (err)
return err;
err = platform_driver_register(&controller_driver);
if (err)
class_destroy(controller_class);
class_unregister(&controller_class);
return err;
}
@ -364,7 +367,7 @@ static int __init controller_init(void)
static void __exit controller_exit(void)
{
platform_driver_unregister(&controller_driver);
class_destroy(controller_class);
class_unregister(&controller_class);
ida_destroy(&controller_index_ida);
}