commit 2c79891211108cd8157124c1b6f9d393729602ff
author samin.ryu <samin.ryu@lge.com> Fri Oct 05 15:57:10 2012 +0900
committer Iliyan Malchev <malchev@google.com> Sun Oct 07 16:45:39 2012 -0700
tree 4d1cf7a2c366d85a06ec8c2ebc2704e7641129f8
parent bf1c87481d62736cab8832e9085c121fbafdbb6b

alsa_sound: avoid pcm_open error

sometimes occur pcm_open error caused by mDevices 0.
so, must not change mDevices to 0.

Bug: 7293209

Change-Id: I3ffaca81dea15145bd8f03e3abedb2840d7c9f2c

alsa_sound/ALSAStreamOps.cpp

diff --git a/alsa_sound/ALSAStreamOps.cpp b/alsa_sound/ALSAStreamOps.cpp
index aafc736..4e534fd 100644
--- a/alsa_sound/ALSAStreamOps.cpp
+++ b/alsa_sound/ALSAStreamOps.cpp
@@ -214,12 +214,16 @@
 
     if (param.getInt(key, device) == NO_ERROR) {
         // Ignore routing if device is 0.
-        ALOGD("setParameters(): keyRouting with device %d", device);
+        ALOGD("setParameters(): keyRouting with device 0x%x", device);
         // reset to speaker when disconnecting HDMI to avoid timeout due to write errors
         if ((device == 0) && (mDevices == AudioSystem::DEVICE_OUT_AUX_DIGITAL)) {
             device = AudioSystem::DEVICE_OUT_SPEAKER;
         }
-        mDevices = device;
+        if (device)
+            mDevices = device;
+        else
+            ALOGV("must not change mDevices to 0");
+
         if(device) {
             mParent->doRouting(device);
         }