diff options
| 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/rio_cm.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/rio_cm.c')
| -rw-r--r-- | drivers/rapidio/rio_cm.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/rapidio/rio_cm.c b/drivers/rapidio/rio_cm.c index 49f8d111e546..9135227301c8 100644 --- a/drivers/rapidio/rio_cm.c +++ b/drivers/rapidio/rio_cm.c @@ -233,7 +233,9 @@ static DEFINE_IDR(ch_idr); static LIST_HEAD(cm_dev_list); static DECLARE_RWSEM(rdev_sem); -static struct class *dev_class; +static const struct class dev_class = { + .name = DRV_NAME, +}; static unsigned int dev_major; static unsigned int dev_minor_base; static dev_t dev_number; @@ -2072,7 +2074,7 @@ static int riocm_cdev_add(dev_t devno) return ret; } - riocm_cdev.dev = device_create(dev_class, NULL, devno, NULL, DEV_NAME); + riocm_cdev.dev = device_create(&dev_class, NULL, devno, NULL, DEV_NAME); if (IS_ERR(riocm_cdev.dev)) { cdev_del(&riocm_cdev.cdev); return PTR_ERR(riocm_cdev.dev); @@ -2293,15 +2295,15 @@ static int __init riocm_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) { riocm_error("Cannot create " DRV_NAME " class"); - return PTR_ERR(dev_class); + return ret; } ret = alloc_chrdev_region(&dev_number, 0, 1, DRV_NAME); if (ret) { - class_destroy(dev_class); + class_unregister(&dev_class); return ret; } @@ -2349,7 +2351,7 @@ err_cl: class_interface_unregister(&rio_mport_interface); err_reg: unregister_chrdev_region(dev_number, 1); - class_destroy(dev_class); + class_unregister(&dev_class); return ret; } @@ -2364,7 +2366,7 @@ static void __exit riocm_exit(void) device_unregister(riocm_cdev.dev); cdev_del(&(riocm_cdev.cdev)); - class_destroy(dev_class); + class_unregister(&dev_class); unregister_chrdev_region(dev_number, 1); } |