diff options
| author | Lars-Peter Clausen <lars@metafoo.de> | 2015-10-28 11:37:53 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2015-10-28 11:42:22 +0100 |
| commit | e5e113cf0d19392f26c6b63e63ad4680ee4ec5da (patch) | |
| tree | a09b4a2ff85aeeb4f2d71f7f6b35866aa8566689 /sound | |
| parent | d9684bb5b3ef83e22a7270341e722f1acc1d97e5 (diff) | |
| download | lwn-e5e113cf0d19392f26c6b63e63ad4680ee4ec5da.tar.gz lwn-e5e113cf0d19392f26c6b63e63ad4680ee4ec5da.zip | |
ALSA: Constify ratden/ratnum constraints
The ALSA core does not modify the constraints provided by a driver. Most
constraint helper functions already take a const pointer to the constraint
description, the exception at the moment being the ratden and ratnum
constraints. Make those const as well, this allows a driver to declare them
as const.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/core/pcm_lib.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c index 05a3ca93c647..6b5a811e01a5 100644 --- a/sound/core/pcm_lib.c +++ b/sound/core/pcm_lib.c @@ -801,7 +801,7 @@ void snd_interval_mulkdiv(const struct snd_interval *a, unsigned int k, * negative error code. */ int snd_interval_ratnum(struct snd_interval *i, - unsigned int rats_count, struct snd_ratnum *rats, + unsigned int rats_count, const struct snd_ratnum *rats, unsigned int *nump, unsigned int *denp) { unsigned int best_num, best_den; @@ -920,7 +920,8 @@ EXPORT_SYMBOL(snd_interval_ratnum); * negative error code. */ static int snd_interval_ratden(struct snd_interval *i, - unsigned int rats_count, struct snd_ratden *rats, + unsigned int rats_count, + const struct snd_ratden *rats, unsigned int *nump, unsigned int *denp) { unsigned int best_num, best_diff, best_den; @@ -1339,7 +1340,7 @@ EXPORT_SYMBOL(snd_pcm_hw_constraint_ranges); static int snd_pcm_hw_rule_ratnums(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule) { - struct snd_pcm_hw_constraint_ratnums *r = rule->private; + const struct snd_pcm_hw_constraint_ratnums *r = rule->private; unsigned int num = 0, den = 0; int err; err = snd_interval_ratnum(hw_param_interval(params, rule->var), @@ -1363,10 +1364,10 @@ static int snd_pcm_hw_rule_ratnums(struct snd_pcm_hw_params *params, int snd_pcm_hw_constraint_ratnums(struct snd_pcm_runtime *runtime, unsigned int cond, snd_pcm_hw_param_t var, - struct snd_pcm_hw_constraint_ratnums *r) + const struct snd_pcm_hw_constraint_ratnums *r) { return snd_pcm_hw_rule_add(runtime, cond, var, - snd_pcm_hw_rule_ratnums, r, + snd_pcm_hw_rule_ratnums, (void *)r, var, -1); } @@ -1375,7 +1376,7 @@ EXPORT_SYMBOL(snd_pcm_hw_constraint_ratnums); static int snd_pcm_hw_rule_ratdens(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule) { - struct snd_pcm_hw_constraint_ratdens *r = rule->private; + const struct snd_pcm_hw_constraint_ratdens *r = rule->private; unsigned int num = 0, den = 0; int err = snd_interval_ratden(hw_param_interval(params, rule->var), r->nrats, r->rats, &num, &den); @@ -1398,10 +1399,10 @@ static int snd_pcm_hw_rule_ratdens(struct snd_pcm_hw_params *params, int snd_pcm_hw_constraint_ratdens(struct snd_pcm_runtime *runtime, unsigned int cond, snd_pcm_hw_param_t var, - struct snd_pcm_hw_constraint_ratdens *r) + const struct snd_pcm_hw_constraint_ratdens *r) { return snd_pcm_hw_rule_add(runtime, cond, var, - snd_pcm_hw_rule_ratdens, r, + snd_pcm_hw_rule_ratdens, (void *)r, var, -1); } |