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authorIvan Orlov2023-06-20 16:37:53 +0200
committerGreg Kroah-Hartman2023-06-23 10:27:08 +0200
commitbd31ef88361a1ca8435bf81551b2bba2d1e07457 (patch)
treee50d01eb87c8c265ba85a81dcde6b93db79e9c02
parente55ce9fd3d8fbf4e94fd5d0c72eb5b7d01fc4574 (diff)
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>
-rw-r--r--drivers/char/dsp56k.c18
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);