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| author | Ivan Orlov <ivan.orlov0322@gmail.com> | 2023-06-20 19:56:34 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2023-06-21 07:29:10 +0200 |
| commit | 8d0cf150d299148a97653610c256f10c42f85ce0 (patch) | |
| tree | 8fcdd51f0de9dfaa0fdf823e05579b4859f1b6d2 /sound/sound_core.c | |
| parent | 7ea9ee0064281ef630e038f8dd2f6e8f4030a696 (diff) | |
| download | linux-stable-8d0cf150d299148a97653610c256f10c42f85ce0.tar.gz linux-stable-8d0cf150d299148a97653610c256f10c42f85ce0.tar.bz2 linux-stable-8d0cf150d299148a97653610c256f10c42f85ce0.zip | |
sound: 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.
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.com>
Cc: Ivan Orlov <ivan.orlov0322@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Geoff Levand <geoff@infradead.org>
Cc: Thierry Reding <treding@nvidia.com>
Cc: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
Cc: alsa-devel@alsa-project.org
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ivan Orlov <ivan.orlov0322@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20230620175633.641141-2-gregkh@linuxfoundation.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/sound_core.c')
| -rw-r--r-- | sound/sound_core.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/sound/sound_core.c b/sound/sound_core.c index 4f6911274d56..d81fed1c1226 100644 --- a/sound/sound_core.c +++ b/sound/sound_core.c @@ -23,9 +23,6 @@ static inline int init_oss_soundcore(void) { return 0; } static inline void cleanup_oss_soundcore(void) { } #endif -struct class *sound_class; -EXPORT_SYMBOL(sound_class); - MODULE_DESCRIPTION("Core sound module"); MODULE_AUTHOR("Alan Cox"); MODULE_LICENSE("GPL"); @@ -37,6 +34,12 @@ static char *sound_devnode(const struct device *dev, umode_t *mode) return kasprintf(GFP_KERNEL, "snd/%s", dev_name(dev)); } +const struct class sound_class = { + .name = "sound", + .devnode = sound_devnode, +}; +EXPORT_SYMBOL(sound_class); + static int __init init_soundcore(void) { int rc; @@ -45,21 +48,19 @@ static int __init init_soundcore(void) if (rc) return rc; - sound_class = class_create("sound"); - if (IS_ERR(sound_class)) { + rc = class_register(&sound_class); + if (rc) { cleanup_oss_soundcore(); - return PTR_ERR(sound_class); + return rc; } - sound_class->devnode = sound_devnode; - return 0; } static void __exit cleanup_soundcore(void) { cleanup_oss_soundcore(); - class_destroy(sound_class); + class_unregister(&sound_class); } subsys_initcall(init_soundcore); @@ -276,7 +277,7 @@ retry: } } - device_create(sound_class, dev, MKDEV(SOUND_MAJOR, s->unit_minor), + device_create(&sound_class, dev, MKDEV(SOUND_MAJOR, s->unit_minor), NULL, "%s", s->name+6); return s->unit_minor; @@ -302,7 +303,7 @@ static void sound_remove_unit(struct sound_unit **list, int unit) if (!preclaim_oss) __unregister_chrdev(SOUND_MAJOR, p->unit_minor, 1, p->name); - device_destroy(sound_class, MKDEV(SOUND_MAJOR, p->unit_minor)); + device_destroy(&sound_class, MKDEV(SOUND_MAJOR, p->unit_minor)); kfree(p); } } |