commit 8c7e1114a3a07c3cb071df461d42e75b7ef3feae
author Viswanath L <viswanathl@nvidia.com> Fri Oct 31 13:07:39 2014 +0530
committer Sumit Bhattacharya <sumitb@nvidia.com> Fri Jan 09 22:38:54 2015 +0530
tree a6cb341306bcbde7c382ba44e69c63c39f55afa6
parent 02e3094598ced8b05c9614d6070556d20328ef43

usbaudio: Return 0 bytes on failure in capture

Return 0 bytes from in_read() in failure conditions so that invalid
data is not recorded.

Change-Id: I9a6294e4162fa642fd7e160a32d1ad16f255ff62

modules/usbaudio/audio_hw.c

diff --git a/modules/usbaudio/audio_hw.c b/modules/usbaudio/audio_hw.c
index 35f7705..78fa7c5 100644
--- a/modules/usbaudio/audio_hw.c
+++ b/modules/usbaudio/audio_hw.c
@@ -852,6 +852,8 @@
                 num_read_buff_bytes =
                     convert_32_to_16(read_buff, num_read_buff_bytes / 4, out_buff);
             } else {
+                LOG_ALWAYS_FATAL("Unsupported format");
+                num_read_buff_bytes = 0;
                 goto err;
             }
         }
@@ -875,6 +877,8 @@
         /* no need to acquire in->dev->lock to read mic_muted here as we don't change its state */
         if (num_read_buff_bytes > 0 && in->dev->mic_muted)
             memset(buffer, 0, num_read_buff_bytes);
+    } else {
+        num_read_buff_bytes = 0;
     }
 
 err: