Oops. I miss a line for this patch. Please drop this patch and apply another one which I will send now.
Regards
Takashi Sakamoto o-takashi@sakamocchi.jp
(Jul 22 2014 23:13), Takashi Sakamoto wrote:
This commit is for correction of my misunderstanding about return value of .put callback in ALSA Control interface.
According to 'Writing ALSA Driver' (*1), return value of the callback has three patterns; 1: changed, 0: not changed, an negative value: fatal error.
But I misunderstood that it's boolean; zero or nonzero.
*1: Writing an ALSA Driver (2005, Takashi Iwai) http://www.alsa-project.org/main/index.php/ALSA_Driver_Documentation
Signed-off-by: Takashi Sakamoto o-takashi@sakamocchi.jp
sound/firewire/bebob/bebob_maudio.c | 26 +++++++++++++++++++------- 1 file changed, 19 insertions(+), 7 deletions(-)
diff --git a/sound/firewire/bebob/bebob_maudio.c b/sound/firewire/bebob/bebob_maudio.c index 42e6f22..d6d6ff8 100644 --- a/sound/firewire/bebob/bebob_maudio.c +++ b/sound/firewire/bebob/bebob_maudio.c @@ -391,7 +391,10 @@ static int special_clk_ctl_put(struct snd_kcontrol *kctl, params->clk_lock); mutex_unlock(&bebob->mutex);
- return err >= 0;
- if (err >= 0)
err = 1;- return err;
} static struct snd_kcontrol_new special_clk_ctl = { .name = "Clock Source", @@ -491,14 +494,16 @@ static int special_dig_in_iface_ctl_set(struct snd_kcontrol *kctl, unsigned int id, dig_in_fmt, dig_in_iface; int err;
- mutex_lock(&bebob->mutex);
- id = uval->value.enumerated.item[0];
if (id >= ARRAY_SIZE(special_dig_in_iface_labels))
return -EINVAL;/* decode user value */ dig_in_fmt = (id >> 1) & 0x01; dig_in_iface = id & 0x01;
mutex_lock(&bebob->mutex);
err = avc_maudio_set_special_clk(bebob, params->clk_src, dig_in_fmt,
@@ -508,14 +513,17 @@ static int special_dig_in_iface_ctl_set(struct snd_kcontrol *kctl, goto end;
/* For ADAT, optical interface is only available. */
- if (params->dig_in_fmt > 0)
if (params->dig_in_fmt > 0) {
err = 1;goto end;
}
/* For S/PDIF, optical/coaxial interfaces are selectable. */ err = avc_audio_set_selector(bebob->unit, 0x00, 0x04, dig_in_iface); if (err < 0) dev_err(&bebob->unit->device, "fail to set digital input interface: %d\n", err);
err = 1;
end: special_stream_formation_set(bebob); mutex_unlock(&bebob->mutex); @@ -567,16 +575,20 @@ static int special_dig_out_iface_ctl_set(struct snd_kcontrol *kctl, unsigned int id; int err;
- mutex_lock(&bebob->mutex);
- id = uval->value.enumerated.item[0];
if (id >= ARRAY_SIZE(special_dig_out_iface_labels))
return -EINVAL;mutex_lock(&bebob->mutex);
err = avc_maudio_set_special_clk(bebob, params->clk_src, params->dig_in_fmt, id, params->clk_lock);
- if (err >= 0)
if (err >= 0) { special_stream_formation_set(bebob);
err = 1;}
mutex_unlock(&bebob->mutex); return err;