Andrew Eikum : xaudio2: Protect access to source voice during creation ( Coverity).

[Alexandre Julliard]

Module: wine
Branch: stable
Commit: 6c50c182e6e03a63a93c2df7a92abea5d8ccb20a
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=6c50c182e6e03a63a93c2df7a92abea5d8ccb20a

Author: Andrew Eikum <aeikum at codeweavers.com>
Date:   Wed Feb 10 12:54:25 2016 -0600

xaudio2: Protect access to source voice during creation (Coverity).

Signed-off-by: Andrew Eikum <aeikum at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>
(cherry picked from commit 2c82e8b477fe476b2eb3ad4452225619ca2e7a58)
Signed-off-by: Michael Stefaniuc <mstefani at winehq.org>

---

 dlls/xaudio2_7/xaudio_dll.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/dlls/xaudio2_7/xaudio_dll.c b/dlls/xaudio2_7/xaudio_dll.c
index a2e3ef5..2f750bd 100644
--- a/dlls/xaudio2_7/xaudio_dll.c
+++ b/dlls/xaudio2_7/xaudio_dll.c
@@ -1364,8 +1364,10 @@ static HRESULT WINAPI IXAudio2Impl_CreateSourceVoice(IXAudio2 *iface,
     EnterCriticalSection(&This->lock);
 
     LIST_FOR_EACH_ENTRY(src, &This->source_voices, XA2SourceImpl, entry){
+        EnterCriticalSection(&src->lock);
         if(!src->in_use)
             break;
+        LeaveCriticalSection(&src->lock);
     }
 
     if(&src->entry == &This->source_voices){
@@ -1386,6 +1388,8 @@ static HRESULT WINAPI IXAudio2Impl_CreateSourceVoice(IXAudio2 *iface,
         src->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": XA2SourceImpl.lock");
 
         src->xa2 = This;
+
+        EnterCriticalSection(&src->lock);
     }
 
     src->in_use = TRUE;
@@ -1398,6 +1402,7 @@ static HRESULT WINAPI IXAudio2Impl_CreateSourceVoice(IXAudio2 *iface,
     src->al_fmt = get_al_format(pSourceFormat);
     if(!src->al_fmt){
         src->in_use = FALSE;
+        LeaveCriticalSection(&src->lock);
         WARN("OpenAL can't convert this format!\n");
         return AUDCLNT_E_UNSUPPORTED_FORMAT;
     }
@@ -1410,6 +1415,7 @@ static HRESULT WINAPI IXAudio2Impl_CreateSourceVoice(IXAudio2 *iface,
     if(FAILED(hr)){
         HeapFree(GetProcessHeap(), 0, src->fmt);
         src->in_use = FALSE;
+        LeaveCriticalSection(&src->lock);
         return hr;
     }
 
@@ -1420,6 +1426,7 @@ static HRESULT WINAPI IXAudio2Impl_CreateSourceVoice(IXAudio2 *iface,
             ERR_(winediag)("OpenAL ran out of sources, consider increasing its source limit.\n");
         HeapFree(GetProcessHeap(), 0, src->fmt);
         src->in_use = FALSE;
+        LeaveCriticalSection(&src->lock);
         return E_OUTOFMEMORY;
     }
 
@@ -1427,6 +1434,8 @@ static HRESULT WINAPI IXAudio2Impl_CreateSourceVoice(IXAudio2 *iface,
 
     alSourcePlay(src->al_src);
 
+    LeaveCriticalSection(&src->lock);
+
 #if XAUDIO2_VER == 0
     *ppSourceVoice = (IXAudio2SourceVoice*)&src->IXAudio20SourceVoice_iface;
 #elif XAUDIO2_VER <= 3