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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-10-06 16:58:40 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2023-10-06 17:44:47 +0300 |
| commit | df22568ad8ed317db95acc11e1c08bae7a0fba5d (patch) | |
| tree | add287aa6dc3c875ed7ba9299797f116ca3f8354 | |
| parent | 881fe6ed21e8c7e60095aabc274c4f2bfdc87c5e (diff) | |
| download | linux-df22568ad8ed317db95acc11e1c08bae7a0fba5d.tar.xz | |
spi: spidev: make spidev_class constant
Now that the driver core allows for struct class to be in read-only
memory, we should make all 'class' structures declared at build time
placing them into read-only memory, instead of having to be dynamically
allocated at runtime.
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/2023100639-celtic-herbs-66be@gregkh
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | drivers/spi/spidev.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c index c5450217528b..655f2c959cd4 100644 --- a/drivers/spi/spidev.c +++ b/drivers/spi/spidev.c @@ -695,7 +695,9 @@ static const struct file_operations spidev_fops = { * It also simplifies memory management. */ -static struct class *spidev_class; +static const struct class spidev_class = { + .name = "spidev", +}; static const struct spi_device_id spidev_spi_ids[] = { { .name = "dh2228fv" }, @@ -798,7 +800,7 @@ static int spidev_probe(struct spi_device *spi) struct device *dev; spidev->devt = MKDEV(SPIDEV_MAJOR, minor); - dev = device_create(spidev_class, &spi->dev, spidev->devt, + dev = device_create(&spidev_class, &spi->dev, spidev->devt, spidev, "spidev%d.%d", spi->master->bus_num, spi_get_chipselect(spi, 0)); status = PTR_ERR_OR_ZERO(dev); @@ -834,7 +836,7 @@ static void spidev_remove(struct spi_device *spi) mutex_unlock(&spidev->spi_lock); list_del(&spidev->device_entry); - device_destroy(spidev_class, spidev->devt); + device_destroy(&spidev_class, spidev->devt); clear_bit(MINOR(spidev->devt), minors); if (spidev->users == 0) kfree(spidev); @@ -872,15 +874,15 @@ static int __init spidev_init(void) if (status < 0) return status; - spidev_class = class_create("spidev"); - if (IS_ERR(spidev_class)) { + status = class_register(&spidev_class); + if (status) { unregister_chrdev(SPIDEV_MAJOR, spidev_spi_driver.driver.name); - return PTR_ERR(spidev_class); + return status; } status = spi_register_driver(&spidev_spi_driver); if (status < 0) { - class_destroy(spidev_class); + class_unregister(&spidev_class); unregister_chrdev(SPIDEV_MAJOR, spidev_spi_driver.driver.name); } return status; @@ -890,7 +892,7 @@ module_init(spidev_init); static void __exit spidev_exit(void) { spi_unregister_driver(&spidev_spi_driver); - class_destroy(spidev_class); + class_unregister(&spidev_class); unregister_chrdev(SPIDEV_MAJOR, spidev_spi_driver.driver.name); } module_exit(spidev_exit); |