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| author | Ivan Orlov <ivan.orlov0322@gmail.com> | 2023-08-10 22:51:03 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-10-05 14:51:35 +0300 |
| commit | d712d205210c494c29f33dc1d1f2ce4d7448faa9 (patch) | |
| tree | cd18e099535e29c5043809ca552aeb9f35695c27 /drivers/rapidio/devices/rio_mport_cdev.c | |
| parent | 4f01342464a8a99bf0cbb45a3ce4cf44a8baa1c5 (diff) | |
| download | linux-d712d205210c494c29f33dc1d1f2ce4d7448faa9.tar.xz | |
rapidio: make all 'class' structures const
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.
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ivan Orlov <ivan.orlov0322@gmail.com>
Link: https://lore.kernel.org/r/20230810195103.27069-1-ivan.orlov0322@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/rapidio/devices/rio_mport_cdev.c')
| -rw-r--r-- | drivers/rapidio/devices/rio_mport_cdev.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/rapidio/devices/rio_mport_cdev.c b/drivers/rapidio/devices/rio_mport_cdev.c index a115730ebf14..27afbb9d544b 100644 --- a/drivers/rapidio/devices/rio_mport_cdev.c +++ b/drivers/rapidio/devices/rio_mport_cdev.c @@ -250,7 +250,9 @@ static DEFINE_MUTEX(mport_devs_lock); static DECLARE_WAIT_QUEUE_HEAD(mport_cdev_wait); #endif -static struct class *dev_class; +static const struct class dev_class = { + .name = DRV_NAME, +}; static dev_t dev_number; static void mport_release_mapping(struct kref *ref); @@ -2379,7 +2381,7 @@ static struct mport_dev *mport_cdev_add(struct rio_mport *mport) device_initialize(&md->dev); md->dev.devt = MKDEV(MAJOR(dev_number), mport->id); - md->dev.class = dev_class; + md->dev.class = &dev_class; md->dev.parent = &mport->dev; md->dev.release = mport_device_release; dev_set_name(&md->dev, DEV_NAME "%d", mport->id); @@ -2600,10 +2602,10 @@ static int __init mport_init(void) int ret; /* Create device class needed by udev */ - dev_class = class_create(DRV_NAME); - if (IS_ERR(dev_class)) { + ret = class_register(&dev_class); + if (ret) { rmcd_error("Unable to create " DRV_NAME " class"); - return PTR_ERR(dev_class); + return ret; } ret = alloc_chrdev_region(&dev_number, 0, RIO_MAX_MPORTS, DRV_NAME); @@ -2624,7 +2626,7 @@ static int __init mport_init(void) err_cli: unregister_chrdev_region(dev_number, RIO_MAX_MPORTS); err_chr: - class_destroy(dev_class); + class_unregister(&dev_class); return ret; } @@ -2634,7 +2636,7 @@ err_chr: static void __exit mport_exit(void) { class_interface_unregister(&rio_mport_interface); - class_destroy(dev_class); + class_unregister(&dev_class); unregister_chrdev_region(dev_number, RIO_MAX_MPORTS); } |