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| author | Ivan Orlov <ivan.orlov0322@gmail.com> | 2023-06-20 16:37:53 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-06-23 10:27:08 +0200 |
| commit | bd31ef88361a1ca8435bf81551b2bba2d1e07457 (patch) | |
| tree | e50d01eb87c8c265ba85a81dcde6b93db79e9c02 /drivers/char/dsp56k.c | |
| parent | e55ce9fd3d8fbf4e94fd5d0c72eb5b7d01fc4574 (diff) | |
| download | lwn-bd31ef88361a1ca8435bf81551b2bba2d1e07457.tar.gz lwn-bd31ef88361a1ca8435bf81551b2bba2d1e07457.zip | |
dsp56k: make dsp56k_class a static const structure
Now that the driver core allows for struct class to be in read-only
memory, move the dsp56k_class structure to be declared at build time
placing it into read-only memory, instead of having to be dynamically
allocated at boot time.
Cc: Arnd Bergmann <arnd@arndb.de>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ivan Orlov <ivan.orlov0322@gmail.com>
Link: https://lore.kernel.org/r/20230620143751.578239-11-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/char/dsp56k.c')
| -rw-r--r-- | drivers/char/dsp56k.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/drivers/char/dsp56k.c b/drivers/char/dsp56k.c index b3eaf3e5ef2e..bda27e595da1 100644 --- a/drivers/char/dsp56k.c +++ b/drivers/char/dsp56k.c @@ -101,7 +101,9 @@ static struct dsp56k_device { int tx_wsize, rx_wsize; } dsp56k; -static struct class *dsp56k_class; +static const struct class dsp56k_class = { + .name = "dsp56k", +}; static int dsp56k_reset(void) { @@ -493,7 +495,7 @@ static const char banner[] __initconst = KERN_INFO "DSP56k driver installed\n"; static int __init dsp56k_init_driver(void) { - int err = 0; + int err; if(!MACH_IS_ATARI || !ATARIHW_PRESENT(DSP56K)) { printk("DSP56k driver: Hardware not present\n"); @@ -504,12 +506,10 @@ static int __init dsp56k_init_driver(void) printk("DSP56k driver: Unable to register driver\n"); return -ENODEV; } - dsp56k_class = class_create("dsp56k"); - if (IS_ERR(dsp56k_class)) { - err = PTR_ERR(dsp56k_class); + err = class_register(&dsp56k_class); + if (err) goto out_chrdev; - } - device_create(dsp56k_class, NULL, MKDEV(DSP56K_MAJOR, 0), NULL, + device_create(&dsp56k_class, NULL, MKDEV(DSP56K_MAJOR, 0), NULL, "dsp56k"); printk(banner); @@ -524,8 +524,8 @@ module_init(dsp56k_init_driver); static void __exit dsp56k_cleanup_driver(void) { - device_destroy(dsp56k_class, MKDEV(DSP56K_MAJOR, 0)); - class_destroy(dsp56k_class); + device_destroy(&dsp56k_class, MKDEV(DSP56K_MAJOR, 0)); + class_unregister(&dsp56k_class); unregister_chrdev(DSP56K_MAJOR, "dsp56k"); } module_exit(dsp56k_cleanup_driver); |