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Diffstat (limited to 'sound/core/oss/mixer_oss.c')
-rw-r--r--sound/core/oss/mixer_oss.c315
1 files changed, 136 insertions, 179 deletions
diff --git a/sound/core/oss/mixer_oss.c b/sound/core/oss/mixer_oss.c
index f702c96a7478..05fc8911479c 100644
--- a/sound/core/oss/mixer_oss.c
+++ b/sound/core/oss/mixer_oss.c
@@ -87,8 +87,8 @@ static int snd_mixer_oss_info(struct snd_mixer_oss_file *fmixer,
struct mixer_info info;
memset(&info, 0, sizeof(info));
- strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
- strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
+ strscpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
+ strscpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
info.modify_counter = card->mixer_oss_change_count;
if (copy_to_user(_info, &info, sizeof(info)))
return -EFAULT;
@@ -103,8 +103,8 @@ static int snd_mixer_oss_info_obsolete(struct snd_mixer_oss_file *fmixer,
_old_mixer_info info;
memset(&info, 0, sizeof(info));
- strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
- strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
+ strscpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
+ strscpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
if (copy_to_user(_info, &info, sizeof(info)))
return -EFAULT;
return 0;
@@ -130,6 +130,7 @@ static int snd_mixer_oss_devmask(struct snd_mixer_oss_file *fmixer)
if (mixer == NULL)
return -EIO;
+ guard(mutex)(&mixer->reg_mutex);
for (chn = 0; chn < 31; chn++) {
pslot = &mixer->slots[chn];
if (pslot->put_volume || pslot->put_recsrc)
@@ -146,6 +147,7 @@ static int snd_mixer_oss_stereodevs(struct snd_mixer_oss_file *fmixer)
if (mixer == NULL)
return -EIO;
+ guard(mutex)(&mixer->reg_mutex);
for (chn = 0; chn < 31; chn++) {
pslot = &mixer->slots[chn];
if (pslot->put_volume && pslot->stereo)
@@ -161,6 +163,7 @@ static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer)
if (mixer == NULL)
return -EIO;
+ guard(mutex)(&mixer->reg_mutex);
if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
result = mixer->mask_recsrc;
} else {
@@ -182,11 +185,12 @@ static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer)
if (mixer == NULL)
return -EIO;
+ guard(mutex)(&mixer->reg_mutex);
if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
- int err;
unsigned int index;
- if ((err = mixer->get_recsrc(fmixer, &index)) < 0)
- return err;
+ result = mixer->get_recsrc(fmixer, &index);
+ if (result < 0)
+ return result;
result = 1 << index;
} else {
struct snd_mixer_oss_slot *pslot;
@@ -201,7 +205,8 @@ static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer)
}
}
}
- return mixer->oss_recsrc = result;
+ mixer->oss_recsrc = result;
+ return result;
}
static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc)
@@ -214,6 +219,7 @@ static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsr
if (mixer == NULL)
return -EIO;
+ guard(mutex)(&mixer->reg_mutex);
if (mixer->get_recsrc && mixer->put_recsrc) { /* exclusive input */
if (recsrc & ~mixer->oss_recsrc)
recsrc &= ~mixer->oss_recsrc;
@@ -250,6 +256,7 @@ static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot)
if (mixer == NULL || slot > 30)
return -EIO;
+ guard(mutex)(&mixer->reg_mutex);
pslot = &mixer->slots[slot];
left = pslot->volume[0];
right = pslot->volume[1];
@@ -278,6 +285,7 @@ static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
if (mixer == NULL || slot > 30)
return -EIO;
+ guard(mutex)(&mixer->reg_mutex);
pslot = &mixer->slots[slot];
if (left > 100)
left = 100;
@@ -291,7 +299,8 @@ static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
return result;
pslot->volume[0] = left;
pslot->volume[1] = right;
- return (left & 0xff) | ((right & 0xff) << 8);
+ result = (left & 0xff) | ((right & 0xff) << 8);
+ return result;
}
static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
@@ -403,7 +412,6 @@ static const struct file_operations snd_mixer_oss_f_ops =
.owner = THIS_MODULE,
.open = snd_mixer_oss_open,
.release = snd_mixer_oss_release,
- .llseek = no_llseek,
.unlocked_ioctl = snd_mixer_oss_ioctl,
.compat_ioctl = snd_mixer_oss_ioctl_compat,
};
@@ -418,7 +426,7 @@ static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long n
if (orange == 0)
return 0;
- return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
+ return DIV_ROUND_CLOSEST(nrange * (val - omin), orange) + nmin;
}
/* convert from alsa native to oss values (0-100) */
@@ -499,7 +507,7 @@ static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, c
memset(&id, 0, sizeof(id));
id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
- strlcpy(id.name, name, sizeof(id.name));
+ strscpy(id.name, name, sizeof(id.name));
id.index = index;
return snd_ctl_find_id(card, &id);
}
@@ -509,36 +517,31 @@ 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;
if (numid == ID_UNKNOWN)
return;
- down_read(&card->controls_rwsem);
- if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
- up_read(&card->controls_rwsem);
+ guard(rwsem_read)(&card->controls_rwsem);
+ kctl = snd_ctl_find_numid(card, numid);
+ if (!kctl)
return;
- }
uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
if (uinfo == NULL || uctl == NULL)
- goto __unalloc;
+ return;
if (kctl->info(kctl, uinfo))
- goto __unalloc;
+ return;
if (kctl->get(kctl, uctl))
- goto __unalloc;
+ return;
if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
- goto __unalloc;
+ return;
*left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
if (uinfo->count > 1)
*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,
@@ -547,26 +550,25 @@ 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;
if (numid == ID_UNKNOWN)
return;
- down_read(&card->controls_rwsem);
- if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
- up_read(&card->controls_rwsem);
+ guard(rwsem_read)(&card->controls_rwsem);
+ kctl = snd_ctl_find_numid(card, numid);
+ if (!kctl)
return;
- }
uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
if (uinfo == NULL || uctl == NULL)
- goto __unalloc;
+ return;
if (kctl->info(kctl, uinfo))
- goto __unalloc;
+ return;
if (kctl->get(kctl, uctl))
- goto __unalloc;
+ return;
if (!uctl->value.integer.value[0]) {
*left = 0;
if (uinfo->count == 1)
@@ -574,10 +576,6 @@ static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
}
if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
*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,
@@ -611,39 +609,35 @@ 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;
if (numid == ID_UNKNOWN)
return;
- down_read(&card->controls_rwsem);
- if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
- up_read(&card->controls_rwsem);
+ guard(rwsem_read)(&card->controls_rwsem);
+ kctl = snd_ctl_find_numid(card, numid);
+ if (!kctl)
return;
- }
uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
if (uinfo == NULL || uctl == NULL)
- goto __unalloc;
+ return;
if (kctl->info(kctl, uinfo))
- goto __unalloc;
+ return;
if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
- goto __unalloc;
+ return;
uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
if (uinfo->count > 1)
uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
- if ((res = kctl->put(kctl, uctl)) < 0)
- goto __unalloc;
+ res = kctl->put(kctl, uctl);
+ if (res < 0)
+ return;
if (res > 0)
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,
@@ -652,25 +646,24 @@ 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;
if (numid == ID_UNKNOWN)
return;
- down_read(&card->controls_rwsem);
- if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
- up_read(&card->controls_rwsem);
+ guard(rwsem_read)(&card->controls_rwsem);
+ kctl = snd_ctl_find_numid(card, numid);
+ if (!kctl)
return;
- }
uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
if (uinfo == NULL || uctl == NULL)
- goto __unalloc;
+ return;
if (kctl->info(kctl, uinfo))
- goto __unalloc;
+ return;
if (uinfo->count > 1) {
uctl->value.integer.value[0] = left > 0 ? 1 : 0;
uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
@@ -681,14 +674,11 @@ static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
} else {
uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
}
- if ((res = kctl->put(kctl, uctl)) < 0)
- goto __unalloc;
+ res = kctl->put(kctl, uctl);
+ if (res < 0)
+ return;
if (res > 0)
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,
@@ -793,26 +783,24 @@ 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;
- }
- down_read(&card->controls_rwsem);
+ if (uinfo == NULL || uctl == NULL)
+ return -ENOMEM;
+ guard(rwsem_read)(&card->controls_rwsem);
kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
- if (! kctl) {
- err = -ENOENT;
- goto __unlock;
- }
- if ((err = kctl->info(kctl, uinfo)) < 0)
- goto __unlock;
- if ((err = kctl->get(kctl, uctl)) < 0)
- goto __unlock;
+ if (!kctl)
+ return -ENOENT;
+ err = kctl->info(kctl, uinfo);
+ if (err < 0)
+ return err;
+ err = kctl->get(kctl, uctl);
+ if (err < 0)
+ return err;
for (idx = 0; idx < 32; idx++) {
if (!(mixer->mask_recsrc & (1 << idx)))
continue;
@@ -827,13 +815,7 @@ static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned
break;
}
}
- err = 0;
- __unlock:
- up_read(&card->controls_rwsem);
- __free_only:
- kfree(uctl);
- kfree(uinfo);
- return err;
+ return 0;
}
static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
@@ -843,25 +825,22 @@ 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;
- }
- down_read(&card->controls_rwsem);
+ if (uinfo == NULL || uctl == NULL)
+ return -ENOMEM;
+ guard(rwsem_read)(&card->controls_rwsem);
kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
- if (! kctl) {
- err = -ENOENT;
- goto __unlock;
- }
- if ((err = kctl->info(kctl, uinfo)) < 0)
- goto __unlock;
+ if (!kctl)
+ return -ENOENT;
+ err = kctl->info(kctl, uinfo);
+ if (err < 0)
+ return err;
for (idx = 0; idx < 32; idx++) {
if (!(mixer->mask_recsrc & (1 << idx)))
continue;
@@ -875,20 +854,14 @@ static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned
break;
slot = NULL;
}
- if (! slot)
- goto __unlock;
+ if (!slot)
+ return 0;
for (idx = 0; idx < uinfo->count; idx++)
uctl->value.enumerated.item[idx] = slot->capture_item;
err = kctl->put(kctl, uctl);
if (err > 0)
snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
- err = 0;
- __unlock:
- up_read(&card->controls_rwsem);
- __free_only:
- kfree(uctl);
- kfree(uinfo);
- return err;
+ return 0;
}
struct snd_mixer_oss_assign_table {
@@ -899,33 +872,26 @@ 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;
- down_read(&card->controls_rwsem);
- kcontrol = snd_mixer_oss_test_id(mixer, name, index);
- if (kcontrol == NULL) {
- up_read(&card->controls_rwsem);
- return 0;
- }
- info = kmalloc(sizeof(*info), GFP_KERNEL);
- if (! info) {
- up_read(&card->controls_rwsem);
- return -ENOMEM;
- }
- if ((err = kcontrol->info(kcontrol, info)) < 0) {
- up_read(&card->controls_rwsem);
- kfree(info);
- return err;
+ scoped_guard(rwsem_read, &card->controls_rwsem) {
+ kcontrol = snd_mixer_oss_test_id(mixer, name, index);
+ if (kcontrol == NULL)
+ return 0;
+ info = kmalloc(sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+ err = kcontrol->info(kcontrol, info);
+ if (err < 0)
+ return err;
+ slot->numid[item] = kcontrol->id.numid;
}
- slot->numid[item] = kcontrol->id.numid;
- up_read(&card->controls_rwsem);
if (info->count > slot->channels)
slot->channels = info->count;
slot->present |= 1 << item;
- kfree(info);
return 0;
}
@@ -934,8 +900,8 @@ static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
struct slot *p = chn->private_data;
if (p) {
if (p->allocated && p->assigned) {
- kfree_const(p->assigned->name);
- kfree_const(p->assigned);
+ kfree(p->assigned->name);
+ kfree(p->assigned);
}
kfree(p);
}
@@ -1035,21 +1001,19 @@ static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer,
memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))
return 0;
- down_read(&mixer->card->controls_rwsem);
- if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
- struct snd_ctl_elem_info *uinfo;
+ guard(rwsem_read)(&mixer->card->controls_rwsem);
+ kctl = NULL;
+ if (!ptr->index)
+ kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
+ if (kctl) {
+ struct snd_ctl_elem_info *uinfo __free(kfree) = NULL;
uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
- if (! uinfo) {
- up_read(&mixer->card->controls_rwsem);
+ if (!uinfo)
return -ENOMEM;
- }
- if (kctl->info(kctl, uinfo)) {
- up_read(&mixer->card->controls_rwsem);
- kfree(uinfo);
+ if (kctl->info(kctl, uinfo))
return 0;
- }
strcpy(str, ptr->name);
if (!strcmp(str, "Master"))
strcpy(str, "Mix");
@@ -1061,20 +1025,15 @@ static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer,
} else {
for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
uinfo->value.enumerated.item = slot.capture_item;
- if (kctl->info(kctl, uinfo)) {
- up_read(&mixer->card->controls_rwsem);
- kfree(uinfo);
+ if (kctl->info(kctl, uinfo))
return 0;
- }
if (!strcmp(uinfo->value.enumerated.name, str)) {
slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
break;
}
}
}
- kfree(uinfo);
}
- up_read(&mixer->card->controls_rwsem);
if (slot.present != 0) {
pslot = kmalloc(sizeof(slot), GFP_KERNEL);
if (! pslot)
@@ -1147,7 +1106,7 @@ static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
struct snd_mixer_oss *mixer = entry->private_data;
int i;
- mutex_lock(&mixer->reg_mutex);
+ guard(mutex)(&mixer->reg_mutex);
for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
struct slot *p;
@@ -1162,7 +1121,6 @@ static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
else
snd_iprintf(buffer, "\"\" 0\n");
}
- mutex_unlock(&mixer->reg_mutex);
}
static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
@@ -1189,9 +1147,8 @@ static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
cptr = snd_info_get_str(str, cptr, sizeof(str));
if (! *str) {
/* remove the entry */
- mutex_lock(&mixer->reg_mutex);
- mixer_slot_clear(&mixer->slots[ch]);
- mutex_unlock(&mixer->reg_mutex);
+ scoped_guard(mutex, &mixer->reg_mutex)
+ mixer_slot_clear(&mixer->slots[ch]);
continue;
}
snd_info_get_str(idxstr, cptr, sizeof(idxstr));
@@ -1200,28 +1157,27 @@ static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
pr_err("ALSA: mixer_oss: invalid index %d\n", idx);
continue;
}
- mutex_lock(&mixer->reg_mutex);
- slot = (struct slot *)mixer->slots[ch].private_data;
- if (slot && slot->assigned &&
- slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
- /* not changed */
- goto __unlock;
- tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
- if (!tbl)
- goto __unlock;
- tbl->oss_id = ch;
- tbl->name = kstrdup(str, GFP_KERNEL);
- if (! tbl->name) {
- kfree(tbl);
- goto __unlock;
- }
- tbl->index = idx;
- if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
- kfree(tbl->name);
- kfree(tbl);
+ scoped_guard(mutex, &mixer->reg_mutex) {
+ slot = (struct slot *)mixer->slots[ch].private_data;
+ if (slot && slot->assigned &&
+ slot->assigned->index == idx && !strcmp(slot->assigned->name, str))
+ /* not changed */
+ break;
+ tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
+ if (!tbl)
+ break;
+ tbl->oss_id = ch;
+ tbl->name = kstrdup(str, GFP_KERNEL);
+ if (!tbl->name) {
+ kfree(tbl);
+ break;
+ }
+ tbl->index = idx;
+ if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
+ kfree(tbl->name);
+ kfree(tbl);
+ }
}
- __unlock:
- mutex_unlock(&mixer->reg_mutex);
}
}
@@ -1343,9 +1299,10 @@ static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
if (mixer == NULL)
return -ENOMEM;
mutex_init(&mixer->reg_mutex);
- if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
- card, 0,
- &snd_mixer_oss_f_ops, card)) < 0) {
+ err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
+ card, 0,
+ &snd_mixer_oss_f_ops, card);
+ if (err < 0) {
dev_err(card->dev,
"unable to register OSS mixer device %i:%i\n",
card->number, 0);
@@ -1355,7 +1312,7 @@ static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
mixer->oss_dev_alloc = 1;
mixer->card = card;
if (*card->mixername)
- strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
+ strscpy(mixer->name, card->mixername, sizeof(mixer->name));
else
snprintf(mixer->name, sizeof(mixer->name),
"mixer%i", card->number);
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