diff options
| author | Takashi Iwai | 2020-01-03 09:16:19 +0100 |
|---|---|---|
| committer | Takashi Iwai | 2020-01-03 09:23:50 +0100 |
| commit | 8b575824304dd18a90616cbcf0f81ca1ed1fb5d2 (patch) | |
| tree | d1c492e263fb25a53d8c930b2620389827344c1c | |
| parent | 2ead9d087fe2eafecf801dd2ab83bdb66dc08ced (diff) | |
ALSA: core: Treat snd_device_ops as const
This is a preliminary patch to allow const for snd_device_ops
definitions in each driver's code. The ops reference is read-only,
hence it can be declared as const for further optimization.
There should be no functional changes by this patch.
Link: https://lore.kernel.org/r/20200103081714.9560-4-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | include/sound/core.h | 4 | ||||
| -rw-r--r-- | sound/core/device.c | 2 |
2 files changed, 3 insertions, 3 deletions
diff --git a/include/sound/core.h b/include/sound/core.h index af3dce956c17..0e14b7a3e67b 100644 --- a/include/sound/core.h +++ b/include/sound/core.h @@ -69,7 +69,7 @@ struct snd_device { enum snd_device_state state; /* state of the device */ enum snd_device_type type; /* device type */ void *device_data; /* device structure */ - struct snd_device_ops *ops; /* operations */ + const struct snd_device_ops *ops; /* operations */ }; #define snd_device(n) list_entry(n, struct snd_device, list) @@ -256,7 +256,7 @@ static inline void snd_card_unref(struct snd_card *card) /* device.c */ int snd_device_new(struct snd_card *card, enum snd_device_type type, - void *device_data, struct snd_device_ops *ops); + void *device_data, const struct snd_device_ops *ops); int snd_device_register(struct snd_card *card, void *device_data); int snd_device_register_all(struct snd_card *card); void snd_device_disconnect(struct snd_card *card, void *device_data); diff --git a/sound/core/device.c b/sound/core/device.c index 708b91944de3..cdc5af526739 100644 --- a/sound/core/device.c +++ b/sound/core/device.c @@ -27,7 +27,7 @@ * Return: Zero if successful, or a negative error code on failure. */ int snd_device_new(struct snd_card *card, enum snd_device_type type, - void *device_data, struct snd_device_ops *ops) + void *device_data, const struct snd_device_ops *ops) { struct snd_device *dev; struct list_head *p; |