On Wed, 07 Dec 2016 14:44:27 +0100, jeeja.kp@intel.com wrote:
From: Jeeja KP jeeja.kp@intel.com
Check stream decoupled register value with requested value before decoupling/coupling the stream.
Signed-off-by: Jeeja KP jeeja.kp@intel.com
sound/hda/ext/hdac_ext_stream.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/sound/hda/ext/hdac_ext_stream.c b/sound/hda/ext/hdac_ext_stream.c index 3be051a..f35b006 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) >> mask);
This looks wrong. And you just need to know whether it's zero or not in below, so the shift is anyway superfluous.
Takashi
- if (decouple && (val == 0))
snd_hdac_updatel(bus->ppcap, AZX_REG_PP_PPCTL, mask, mask);- else if (!decouple && (val > 0))
snd_hdac_updatel(bus->ppcap, AZX_REG_PP_PPCTL, mask, 0);- stream->decoupled = decouple; spin_unlock_irq(&bus->reg_lock);
}
2.5.0