Changeset 55025 in vbox for trunk/src

Timestamp:

Mar 31, 2015 10:50:05 AM (10 years ago)

Author:

vboxsync

Message:

PDM/DevSB16.cpp: Bail out reading DMA data when there's no consumer left.

File:

• trunk/src/VBox/Devices/Audio/DevSB16.cpp (modified) (2 diffs)

trunk/src/VBox/Devices/Audio/DevSB16.cpp

@@ -1687 +1687 @@
 #else
         int rc = PDMDevHlpDMAReadMemory(pThis->pDevIns, nchan, tmpbuf, dma_pos, cbToRead, &cbRead);
-        AssertMsgRC (rc, ("DMAReadMemory -> %Rrc\n", rc));
+        AssertMsgRC(rc, ("DMAReadMemory -> %Rrc\n", rc));
 #endif
 
@@ -1711 +1711 @@
 #endif /* VBOX_WITH_PDM_AUDIO_DRIVER */
 
+        Assert(cbToWrite >= cbWrittenMin);
         cbToWrite      -= cbWrittenMin;
         dma_pos         = (dma_pos + cbWrittenMin) % dma_len;
         cbWrittenTotal += cbWrittenMin;
 
-        if (!cbRead)
+        if (!cbRead || !cbWrittenMin)
             break;
     }