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ASoC: core: Use kasprintf instead of opencoding it 

kasprintf calculates the size of the result string, allocates a buffer large
enough to hold the string and then performs the format string operation. There
are a couple of places in ASoC where these three steps are done by hand and
where kasprintf can be used instead.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Lars-Peter Clausen 2013-05-14 11:05:32 +02:00 committed by Mark Brown
parent bd477c31ca
commit 2b58107435
2 changed files with 11 additions and 26 deletions
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6
sound/soc/soc-core.c
View File

@ -2237,7 +2237,6 @@ struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
struct snd_kcontrol_new template;
struct snd_kcontrol *kcontrol;
char *name = NULL;
int name_len;
memcpy(&template, _template, sizeof(template));
template.index = 0;
@ -2246,13 +2245,10 @@ struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
long_name = template.name;
if (prefix) {
name_len = strlen(long_name) + strlen(prefix) + 2;
name = kmalloc(name_len, GFP_KERNEL);
name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name);
if (!name)
return NULL;
snprintf(name, name_len, "%s %s", prefix, long_name);
template.name = name;
} else {
template.name = long_name;

31
sound/soc/soc-dapm.c
View File

@ -521,7 +521,6 @@ static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget *w,
int wlistentries;
size_t wlistsize;
bool wname_in_long_name, kcname_in_long_name;
size_t name_len;
char *long_name;
const char *name;
int ret;
@ -586,25 +585,19 @@ static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget *w,
}
if (wname_in_long_name && kcname_in_long_name) {
name_len = strlen(w->name) - prefix_len + 1 +
strlen(w->kcontrol_news[kci].name) + 1;
long_name = kmalloc(name_len, GFP_KERNEL);
if (long_name == NULL) {
kfree(wlist);
return -ENOMEM;
}
/*
* The control will get a prefix from the control
* creation process but we're also using the same
* prefix for widgets so cut the prefix off the
* front of the widget name.
*/
snprintf(long_name, name_len, "%s %s",
long_name = kasprintf(GFP_KERNEL, "%s %s",
w->name + prefix_len,
w->kcontrol_news[kci].name);
long_name[name_len - 1] = '\0';
if (long_name == NULL) {
kfree(wlist);
return -ENOMEM;
}
name = long_name;
} else if (wname_in_long_name) {
@ -3077,7 +3070,6 @@ snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
const struct snd_soc_dapm_widget *widget)
{
struct snd_soc_dapm_widget *w;
size_t name_len;
int ret;
if ((w = dapm_cnew_widget(widget)) == NULL)
@ -3118,19 +3110,16 @@ snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
break;
}
name_len = strlen(widget->name) + 1;
if (dapm->codec && dapm->codec->name_prefix)
name_len += 1 + strlen(dapm->codec->name_prefix);
w->name = kmalloc(name_len, GFP_KERNEL);
w->name = kasprintf(GFP_KERNEL, "%s %s",
dapm->codec->name_prefix, widget->name);
else
w->name = kasprintf(GFP_KERNEL, "%s", widget->name);
if (w->name == NULL) {
kfree(w);
return NULL;
}
if (dapm->codec && dapm->codec->name_prefix)
snprintf((char *)w->name, name_len, "%s %s",
dapm->codec->name_prefix, widget->name);
else
snprintf((char *)w->name, name_len, "%s", widget->name);
switch (w->id) {
case snd_soc_dapm_switch: