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ALSA: mixer_oss: ump: Use automatic cleanup of kfree() 

There are common patterns where a temporary buffer is allocated and
freed at the exit, and those can be simplified with the recent cleanup
mechanism via __free(kfree).

No functional changes, only code refactoring.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20240223084241.3361-4-tiwai@suse.de
This commit is contained in:
Takashi Iwai 2024-02-23 09:42:40 +01:00
parent d90950c6a2
commit 6c40eec521
1 changed files with 18 additions and 41 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

59
sound/core/oss/mixer_oss.c
View File

@ -532,8 +532,8 @@ static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
unsigned int numid,
int *left, int *right)
{
struct snd_ctl_elem_info *uinfo;
struct snd_ctl_elem_value *uctl;
struct snd_ctl_elem_info *uinfo __free(kfree) = NULL;
struct snd_ctl_elem_value *uctl __free(kfree) = NULL;
struct snd_kcontrol *kctl;
struct snd_card *card = fmixer->card;
@ -561,8 +561,6 @@ static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
*right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
__unalloc:
up_read(&card->controls_rwsem);
kfree(uctl);
kfree(uinfo);
}
static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
@ -571,8 +569,8 @@ static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
int *left, int *right,
int route)
{
struct snd_ctl_elem_info *uinfo;
struct snd_ctl_elem_value *uctl;
struct snd_ctl_elem_info *uinfo __free(kfree) = NULL;
struct snd_ctl_elem_value *uctl __free(kfree) = NULL;
struct snd_kcontrol *kctl;
struct snd_card *card = fmixer->card;
@ -601,8 +599,6 @@ static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
*right = 0;
__unalloc:
up_read(&card->controls_rwsem);
kfree(uctl);
kfree(uinfo);
}
static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
@ -636,8 +632,8 @@ static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
unsigned int numid,
int left, int right)
{
struct snd_ctl_elem_info *uinfo;
struct snd_ctl_elem_value *uctl;
struct snd_ctl_elem_info *uinfo __free(kfree) = NULL;
struct snd_ctl_elem_value *uctl __free(kfree) = NULL;
struct snd_kcontrol *kctl;
struct snd_card *card = fmixer->card;
int res;
@ -669,8 +665,6 @@ static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
__unalloc:
up_read(&card->controls_rwsem);
kfree(uctl);
kfree(uinfo);
}
static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
@ -679,8 +673,8 @@ static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
int left, int right,
int route)
{
struct snd_ctl_elem_info *uinfo;
struct snd_ctl_elem_value *uctl;
struct snd_ctl_elem_info *uinfo __free(kfree) = NULL;
struct snd_ctl_elem_value *uctl __free(kfree) = NULL;
struct snd_kcontrol *kctl;
struct snd_card *card = fmixer->card;
int res;
@ -716,8 +710,6 @@ static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
__unalloc:
up_read(&card->controls_rwsem);
kfree(uctl);
kfree(uinfo);
}
static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
@ -822,16 +814,14 @@ static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned
struct snd_kcontrol *kctl;
struct snd_mixer_oss_slot *pslot;
struct slot *slot;
struct snd_ctl_elem_info *uinfo;
struct snd_ctl_elem_value *uctl;
struct snd_ctl_elem_info *uinfo __free(kfree) = NULL;
struct snd_ctl_elem_value *uctl __free(kfree) = NULL;
int err, idx;
uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
if (uinfo == NULL || uctl == NULL) {
err = -ENOMEM;
goto __free_only;
}
if (uinfo == NULL || uctl == NULL)
return -ENOMEM;
down_read(&card->controls_rwsem);
kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
if (! kctl) {
@ -861,9 +851,6 @@ static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned
err = 0;
__unlock:
up_read(&card->controls_rwsem);
__free_only:
kfree(uctl);
kfree(uinfo);
return err;
}
@ -874,17 +861,15 @@ static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned
struct snd_kcontrol *kctl;
struct snd_mixer_oss_slot *pslot;
struct slot *slot = NULL;
struct snd_ctl_elem_info *uinfo;
struct snd_ctl_elem_value *uctl;
struct snd_ctl_elem_info *uinfo __free(kfree) = NULL;
struct snd_ctl_elem_value *uctl __free(kfree) = NULL;
int err;
unsigned int idx;
uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
if (uinfo == NULL || uctl == NULL) {
err = -ENOMEM;
goto __free_only;
}
if (uinfo == NULL || uctl == NULL)
return -ENOMEM;
down_read(&card->controls_rwsem);
kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
if (! kctl) {
@ -917,9 +902,6 @@ static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned
err = 0;
__unlock:
up_read(&card->controls_rwsem);
__free_only:
kfree(uctl);
kfree(uinfo);
return err;
}
@ -931,7 +913,7 @@ struct snd_mixer_oss_assign_table {
static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
{
struct snd_ctl_elem_info *info;
struct snd_ctl_elem_info *info __free(kfree) = NULL;
struct snd_kcontrol *kcontrol;
struct snd_card *card = mixer->card;
int err;
@ -950,7 +932,6 @@ static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *sl
err = kcontrol->info(kcontrol, info);
if (err < 0) {
up_read(&card->controls_rwsem);
kfree(info);
return err;
}
slot->numid[item] = kcontrol->id.numid;
@ -958,7 +939,6 @@ static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *sl
if (info->count > slot->channels)
slot->channels = info->count;
slot->present |= 1 << item;
kfree(info);
return 0;
}
@ -1073,7 +1053,7 @@ static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer,
if (!ptr->index)
kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
if (kctl) {
struct snd_ctl_elem_info *uinfo;
struct snd_ctl_elem_info *uinfo __free(kfree) = NULL;
uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
if (! uinfo) {
@ -1083,7 +1063,6 @@ static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer,
if (kctl->info(kctl, uinfo)) {
up_read(&mixer->card->controls_rwsem);
kfree(uinfo);
return 0;
}
strcpy(str, ptr->name);
@ -1099,7 +1078,6 @@ static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer,
uinfo->value.enumerated.item = slot.capture_item;
if (kctl->info(kctl, uinfo)) {
up_read(&mixer->card->controls_rwsem);
kfree(uinfo);
return 0;
}
if (!strcmp(uinfo->value.enumerated.name, str)) {
@ -1108,7 +1086,6 @@ static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer,
}
}
}
kfree(uinfo);
}
up_read(&mixer->card->controls_rwsem);
if (slot.present != 0) {