Merge remote-tracking branch 'remotes/kraxel/tags/pull-audio-20161027-1' into staging

audio: intel-hda: check stream entry count during transfer

# gpg: Signature made Thu 27 Oct 2016 15:30:51 BST
# gpg:                using RSA key 0x4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/pull-audio-20161027-1:
  audio: intel-hda: check stream entry count during transfer
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

hw/audio/intel-hda.c

@@ -416,7 +416,8 @@ static bool intel_hda_xfer(HDACodecDevice *dev, uint32_t stnr, bool output,
     }
 
     left = len;
-    while (left > 0) {
+    s = st->bentries;
+    while (left > 0 && s-- > 0) {
         copy = left;
         if (copy > st->bsize - st->lpib)
             copy = st->bsize - st->lpib;