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>
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index 05a3ca9..6b5a811 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -801,7 +801,7 @@
* 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 @@
* 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 @@
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 @@
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 @@
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 @@
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);
}