Hold lock when doing a route.

Routing can end up closing and re-opening an audio path (alsa_default.cpp).
If this happend while audio is being played or recorded, then the handle
can become invalid and cause a crash in the ALSA library.

Change-Id: I2ab62cec0b8a77abdfb890c2addf7e3f54aca750

1 files changed, 1 insertions, 0 deletions

diff --git a/ALSAStreamOps.cpp b/ALSAStreamOps.cpp
index 0d14971..e450dd0 100644
--- a/ALSAStreamOps.cpp
+++ b/ALSAStreamOps.cpp
@@ -161,6 +161,7 @@ status_t ALSAStreamOps::setParameters(const String8& keyValuePairs)
     LOGV("setParameters() %s", keyValuePairs.string());
 
     if (param.getInt(key, device) == NO_ERROR) {
+        AutoMutex lock(mLock);
         mParent->mALSADevice->route(mHandle, (uint32_t)device, mParent->mode());
         param.remove(key);
     }