diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-10-05 15:55:13 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-10-06 15:38:34 +0200 |
| commit | f267da65bb6b2c33cfd9f8533def17f1db1d4fdf (patch) | |
| tree | 324b1e959ad88fc3603cec3f71a50bf254b1be84 /drivers/staging/pi433 | |
| parent | 0c99ee4e8f4bdfc9347de2e161d7efcdacce853b (diff) | |
staging: pi433: make pi433_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.
Link: https://lore.kernel.org/r/2023100512-sweat-abruptly-2445@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/pi433')
| -rw-r--r-- | drivers/staging/pi433/pi433_if.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/drivers/staging/pi433/pi433_if.c b/drivers/staging/pi433/pi433_if.c index 58887619b83f..0ec3130225db 100644 --- a/drivers/staging/pi433/pi433_if.c +++ b/drivers/staging/pi433/pi433_if.c @@ -56,7 +56,10 @@ static DEFINE_IDR(pi433_idr); static DEFINE_MUTEX(minor_lock); /* Protect idr accesses */ static struct dentry *root_dir; /* debugfs root directory for the driver */ -static struct class *pi433_class; /* mainly for udev to create /dev/pi433 */ +/* mainly for udev to create /dev/pi433 */ +static const struct class pi433_class = { + .name = "pi433", +}; /* * tx config is instance specific @@ -1259,7 +1262,7 @@ static int pi433_probe(struct spi_device *spi) /* create device */ device->devt = MKDEV(MAJOR(pi433_dev), device->minor); - device->dev = device_create(pi433_class, + device->dev = device_create(&pi433_class, &spi->dev, device->devt, device, @@ -1315,7 +1318,7 @@ del_cdev: cdev_failed: kthread_stop(device->tx_task_struct); send_thread_failed: - device_destroy(pi433_class, device->devt); + device_destroy(&pi433_class, device->devt); device_create_failed: pi433_free_minor(device); minor_failed: @@ -1342,7 +1345,7 @@ static void pi433_remove(struct spi_device *spi) kthread_stop(device->tx_task_struct); - device_destroy(pi433_class, device->devt); + device_destroy(&pi433_class, device->devt); cdev_del(device->cdev); @@ -1398,18 +1401,18 @@ static int __init pi433_init(void) if (status < 0) return status; - pi433_class = class_create("pi433"); - if (IS_ERR(pi433_class)) { + status = class_register(&pi433_class); + if (status) { unregister_chrdev(MAJOR(pi433_dev), pi433_spi_driver.driver.name); - return PTR_ERR(pi433_class); + return status; } root_dir = debugfs_create_dir(KBUILD_MODNAME, NULL); status = spi_register_driver(&pi433_spi_driver); if (status < 0) { - class_destroy(pi433_class); + class_unregister(&pi433_class); unregister_chrdev(MAJOR(pi433_dev), pi433_spi_driver.driver.name); } @@ -1422,7 +1425,7 @@ module_init(pi433_init); static void __exit pi433_exit(void) { spi_unregister_driver(&pi433_spi_driver); - class_destroy(pi433_class); + class_unregister(&pi433_class); unregister_chrdev(MAJOR(pi433_dev), pi433_spi_driver.driver.name); debugfs_remove(root_dir); } |