ALSA: x86: Drop unused fields from pcm_stream_info

The struct pcm_stream_info contains a few unused or useless fields.
str_id is always zero, buffer_ptr is volatile, never read, and sfreq
is nowhere referred.  Kill them.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/x86/intel_hdmi_audio.c b/sound/x86/intel_hdmi_audio.c
index 88e9a91..907e420 100644 (file)
--- a/sound/x86/intel_hdmi_audio.c
+++ b/sound/x86/intel_hdmi_audio.c
@@ -1019,8 +1019,6 @@ static int snd_intelhad_close(struct snd_pcm_substream *substream)
        intelhaddata = snd_pcm_substream_chip(substream);
 
        intelhaddata->stream_info.buffer_rendered = 0;
-       intelhaddata->stream_info.buffer_ptr = 0;
-       intelhaddata->stream_info.str_id = 0;
        intelhaddata->stream_info.had_substream = NULL;
 
        /* Check if following drv_status modification is required - VA */
@@ -1132,7 +1130,6 @@ static int snd_intelhad_pcm_trigger(struct snd_pcm_substream *substream,
 
        case SNDRV_PCM_TRIGGER_STOP:
                spin_lock(&intelhaddata->had_spinlock);
-               intelhaddata->stream_info.str_id = 0;
                intelhaddata->curr_buf = 0;
 
                /* Stop reporting BUFFER_DONE/UNDERRUN to above layers */
@@ -1188,19 +1185,8 @@ static int snd_intelhad_pcm_prepare(struct snd_pcm_substream *substream)
        dev_dbg(intelhaddata->dev, "rate=%d\n", runtime->rate);
        dev_dbg(intelhaddata->dev, "channels=%d\n", runtime->channels);
 
-       if (intelhaddata->stream_info.str_id) {
-               dev_dbg(intelhaddata->dev,
-                       "_prepare is called for existing str_id#%d\n",
-                                       intelhaddata->stream_info.str_id);
-               retval = snd_intelhad_pcm_trigger(substream,
-                                               SNDRV_PCM_TRIGGER_STOP);
-               return retval;
-       }
-
        intelhaddata->stream_info.had_substream = substream;
-       intelhaddata->stream_info.buffer_ptr = 0;
        intelhaddata->stream_info.buffer_rendered = 0;
-       intelhaddata->stream_info.sfreq = substream->runtime->rate;
 
        /* Get N value in KHz */
        disp_samp_freq = intelhaddata->tmds_clock_speed;
@@ -1292,10 +1278,7 @@ static snd_pcm_uframes_t snd_intelhad_pcm_pointer(
                        intelhaddata->stream_info.ring_buf_size,
                        &(bytes_rendered));
 
-       intelhaddata->stream_info.buffer_ptr = bytes_to_frames(
-                                               substream->runtime,
-                                               bytes_rendered + t);
-       return intelhaddata->stream_info.buffer_ptr;
+       return bytes_to_frames(substream->runtime, bytes_rendered + t);
 }
 
 /*

diff --git a/sound/x86/intel_hdmi_audio.h b/sound/x86/intel_hdmi_audio.h
index 3bd2bb6..7bd273e 100644 (file)
--- a/sound/x86/intel_hdmi_audio.h
+++ b/sound/x86/intel_hdmi_audio.h
@@ -72,12 +72,9 @@
 #define AUD_CONFIG_CH_MASK     0x70
 
 struct pcm_stream_info {
-       int             str_id;
        struct snd_pcm_substream        *had_substream;
-       u32             buffer_ptr;
        u64             buffer_rendered;
        u32             ring_buf_size;
-       int             sfreq;
 };
 
 struct ring_buf_info {