diff options
| -rw-r--r-- | sound/hda/ext/hdac_ext_stream.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/sound/hda/ext/hdac_ext_stream.c b/sound/hda/ext/hdac_ext_stream.c index 3be051ab5533..c96d7a7a36af 100644 --- a/sound/hda/ext/hdac_ext_stream.c +++ b/sound/hda/ext/hdac_ext_stream.c @@ -128,14 +128,17 @@ void snd_hdac_ext_stream_decouple(struct hdac_ext_bus *ebus, { struct hdac_stream *hstream = &stream->hstream; struct hdac_bus *bus = &ebus->bus; + u32 val; + int mask = AZX_PPCTL_PROCEN(hstream->index); spin_lock_irq(&bus->reg_lock); - if (decouple) - snd_hdac_updatel(bus->ppcap, AZX_REG_PP_PPCTL, 0, - AZX_PPCTL_PROCEN(hstream->index)); - else - snd_hdac_updatel(bus->ppcap, AZX_REG_PP_PPCTL, - AZX_PPCTL_PROCEN(hstream->index), 0); + val = readw(bus->ppcap + AZX_REG_PP_PPCTL) & mask; + + if (decouple && !val) + snd_hdac_updatel(bus->ppcap, AZX_REG_PP_PPCTL, mask, mask); + else if (!decouple && val) + snd_hdac_updatel(bus->ppcap, AZX_REG_PP_PPCTL, mask, 0); + stream->decoupled = decouple; spin_unlock_irq(&bus->reg_lock); } |