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-rw-r--r--sound/hda/ext/hdac_ext_stream.c15
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);
}