hikey: audio: Clean up warnings

Change-Id: I3e0b49688a6ab709d3619d6e79ed9ac94448fc76
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
diff --git a/audio/audio_hw.c b/audio/audio_hw.c
index 87fc4c6..a62c344 100644
--- a/audio/audio_hw.c
+++ b/audio/audio_hw.c
@@ -132,7 +132,6 @@
 static size_t out_get_buffer_size(const struct audio_stream *stream)
 {
     ALOGV("out_get_buffer_size: %d", 4096);
-    struct alsa_stream_out *out = (struct alsa_stream_out *)stream;
 
     /* return the closest majoring multiple of 16 frames, as
      * audioflinger expects audio buffers to be a multiple of 16 frames */
@@ -200,7 +199,6 @@
     struct alsa_stream_out *out = (struct alsa_stream_out *)stream;
     struct alsa_audio_device *adev = out->dev;
     struct str_parms *parms;
-    char *str;
     char value[32];
     int ret, val = 0;
 
@@ -251,7 +249,6 @@
     struct alsa_audio_device *adev = out->dev;
     size_t frame_size = audio_stream_out_frame_size(stream);
     size_t out_frames = bytes / frame_size;
-    int kernel_frames;
     struct misc_io_pcm_buf_param pcmbuf;
 
     /* acquiring hw device mutex systematically is useful if a low priority thread is waiting
@@ -589,7 +586,7 @@
     return 320;
 }
 
-static int adev_open_input_stream(struct audio_hw_device *dev,
+static int adev_open_input_stream(struct audio_hw_device __unused *dev,
         audio_io_handle_t handle,
         audio_devices_t devices,
         struct audio_config *config,
@@ -598,11 +595,9 @@
         const char *address __unused,
         audio_source_t source __unused)
 {
-    ALOGV("adev_open_input_stream...");
-
-    struct stub_audio_device *ladev = (struct stub_audio_device *)dev;
     struct stub_stream_in *in;
-    int ret;
+
+    ALOGV("adev_open_input_stream...");
 
     in = (struct stub_stream_in *)calloc(1, sizeof(struct stub_stream_in));
     if (!in)
@@ -655,10 +650,9 @@
 static int adev_open(const hw_module_t* module, const char* name,
         hw_device_t** device)
 {
-    ALOGV("adev_open: %s", name);
-
     struct alsa_audio_device *adev;
-    int ret;
+
+    ALOGV("adev_open: %s", name);
 
     if (strcmp(name, AUDIO_HARDWARE_INTERFACE) != 0)
         return -EINVAL;