Mixer control put callbacks should return 1 if the value is changed. Fix the mute, air, phantom, direct monitor, speaker switch, talkback, and MSD controls accordingly.

Fix scarlett2_speaker_switch_enable() to not ignore the return value of scarlett2_sw_hw_change().

Reported-by: Aaron Wolf aaron@wolftune.com Tested-by: Aaron Wolf aaron@wolftune.com Signed-off-by: Geoffrey D. Bennett g@b4.vu --- sound/usb/mixer_scarlett_gen2.c | 38 +++++++++++++++++++++++++-------- 1 file changed, 29 insertions(+), 9 deletions(-)

diff --git a/sound/usb/mixer_scarlett_gen2.c b/sound/usb/mixer_scarlett_gen2.c index a6387d5c1888..346551599dd6 100644 --- a/sound/usb/mixer_scarlett_gen2.c +++ b/sound/usb/mixer_scarlett_gen2.c @@ -1880,6 +1880,8 @@ static int scarlett2_mute_ctl_put(struct snd_kcontrol *kctl, /* Send mute change to the device */ err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_MUTE_SWITCH, index, val); + if (err == 0) + err = 1;

unlock: mutex_unlock(&private->data_mutex); @@ -2246,6 +2248,8 @@ static int scarlett2_air_ctl_put(struct snd_kcontrol *kctl, /* Send switch change to the device */ err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_AIR_SWITCH, index, val); + if (err == 0) + err = 1;

unlock: mutex_unlock(&private->data_mutex); @@ -2302,6 +2306,8 @@ static int scarlett2_phantom_ctl_put(struct snd_kcontrol *kctl, /* Send switch change to the device */ err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_PHANTOM_SWITCH, index, val); + if (err == 0) + err = 1;

unlock: mutex_unlock(&private->data_mutex); @@ -2351,6 +2357,8 @@ static int scarlett2_phantom_persistence_ctl_put( /* Send switch change to the device */ err = scarlett2_usb_set_config( mixer, SCARLETT2_CONFIG_PHANTOM_PERSISTENCE, index, val); + if (err == 0) + err = 1;

unlock: mutex_unlock(&private->data_mutex); @@ -2475,6 +2483,8 @@ static int scarlett2_direct_monitor_ctl_put( /* Send switch change to the device */ err = scarlett2_usb_set_config( mixer, SCARLETT2_CONFIG_DIRECT_MONITOR, index, val); + if (err == 0) + err = 1;

unlock: mutex_unlock(&private->data_mutex); @@ -2556,18 +2566,21 @@ static int scarlett2_speaker_switch_enum_ctl_get( /* when speaker switching gets enabled, switch the main/alt speakers * to HW volume and disable those controls */ -static void scarlett2_speaker_switch_enable(struct usb_mixer_interface *mixer) +static int scarlett2_speaker_switch_enable(struct usb_mixer_interface *mixer) { struct snd_card *card = mixer->chip->card; struct scarlett2_data *private = mixer->private_data; - int i; + int i, err;

for (i = 0; i < 4; i++) { int index = line_out_remap(private, i);

/* switch the main/alt speakers to HW volume */ - if (!private->vol_sw_hw_switch[index]) - scarlett2_sw_hw_change(private->mixer, i, 1); + if (!private->vol_sw_hw_switch[index]) { + err = scarlett2_sw_hw_change(private->mixer, i, 1); + if (err < 0) + return err; + }

/* disable the line out SW/HW switch */ scarlett2_sw_hw_ctl_ro(private, i); @@ -2579,6 +2592,8 @@ static void scarlett2_speaker_switch_enable(struct usb_mixer_interface *mixer) * configuration */ private->speaker_switching_switched = 1; + + return 0; }

/* when speaker switching gets disabled, reenable the hw/sw controls @@ -2638,10 +2653,13 @@ static int scarlett2_speaker_switch_enum_ctl_put(

/* update controls if speaker switching gets enabled or disabled */ if (!oval && val) - scarlett2_speaker_switch_enable(mixer); + err = scarlett2_speaker_switch_enable(mixer); else if (oval && !val) scarlett2_speaker_switch_disable(mixer);

+ if (err == 0) + err = 1; + unlock: mutex_unlock(&private->data_mutex); return err; @@ -2728,8 +2746,8 @@ static int scarlett2_talkback_enum_ctl_put( err = scarlett2_usb_set_config( mixer, SCARLETT2_CONFIG_MONITOR_OTHER_SWITCH, 1, val == 2); - if (err < 0) - goto unlock; + if (err == 0) + err = 1;

unlock: mutex_unlock(&private->data_mutex); @@ -2787,8 +2805,8 @@ static int scarlett2_talkback_map_ctl_put( /* Send updated bitmap to the device */ err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_TALKBACK_MAP, 0, bitmap); - if (err < 0) - goto unlock; + if (err == 0) + err = 1;

unlock: mutex_unlock(&private->data_mutex); @@ -3402,6 +3420,8 @@ static int scarlett2_msd_ctl_put(struct snd_kcontrol *kctl, /* Send switch change to the device */ err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_MSD_SWITCH, 0, val); + if (err == 0) + err = 1;

unlock: mutex_unlock(&private->data_mutex);