The helper function isn't clearer than the plain condition check "if (drv_status == HDA_DRV_DISCONNECTED)". By expanding this, the compiler could even catch the possible uninitialized cases, so we could fix them, too.
Signed-off-by: Takashi Iwai tiwai@suse.de --- sound/x86/intel_hdmi_audio.c | 42 ++++++++++++++---------------------------- 1 file changed, 14 insertions(+), 28 deletions(-)
diff --git a/sound/x86/intel_hdmi_audio.c b/sound/x86/intel_hdmi_audio.c index 835e0f2c4f0b..7c6549a10c1c 100644 --- a/sound/x86/intel_hdmi_audio.c +++ b/sound/x86/intel_hdmi_audio.c @@ -155,15 +155,6 @@ static const struct snd_pcm_hardware snd_intel_hadstream = { };
/* Register access functions */ -static int had_get_hwstate(struct snd_intelhad *intelhaddata) -{ - /* Check for device presence -SW state */ - if (intelhaddata->drv_status == HAD_DRV_DISCONNECTED) - return -ENODEV; - - return 0; -} - static inline void mid_hdmi_audio_read(struct snd_intelhad *ctx, u32 reg, u32 *val) { @@ -179,11 +170,8 @@ mid_hdmi_audio_write(struct snd_intelhad *ctx, u32 reg, u32 val) static int had_read_register(struct snd_intelhad *intelhaddata, u32 offset, u32 *data) { - int retval; - - retval = had_get_hwstate(intelhaddata); - if (retval) - return retval; + if (intelhaddata->drv_status == HAD_DRV_DISCONNECTED) + return -ENODEV;
mid_hdmi_audio_read(intelhaddata, offset, data); return 0; @@ -201,11 +189,8 @@ static void fixup_dp_config(struct snd_intelhad *intelhaddata, static int had_write_register(struct snd_intelhad *intelhaddata, u32 offset, u32 data) { - int retval; - - retval = had_get_hwstate(intelhaddata); - if (retval) - return retval; + if (intelhaddata->drv_status == HAD_DRV_DISCONNECTED) + return -ENODEV;
fixup_dp_config(intelhaddata, offset, &data); mid_hdmi_audio_write(intelhaddata, offset, data); @@ -216,11 +201,9 @@ static int had_read_modify(struct snd_intelhad *intelhaddata, u32 offset, u32 data, u32 mask) { u32 val_tmp; - int retval;
- retval = had_get_hwstate(intelhaddata); - if (retval) - return retval; + if (intelhaddata->drv_status == HAD_DRV_DISCONNECTED) + return -ENODEV;
mid_hdmi_audio_read(intelhaddata, offset, &val_tmp); val_tmp &= ~mask; @@ -930,7 +913,7 @@ static int snd_intelhad_prog_n(u32 aud_samp_freq, u32 *n_param,
static void snd_intelhad_handle_underrun(struct snd_intelhad *intelhaddata) { - u32 hdmi_status, i = 0; + u32 hdmi_status = 0, i = 0;
/* Handle Underrun interrupt within Audio Unit */ had_write_register(intelhaddata, AUD_CONFIG, 0); @@ -977,7 +960,7 @@ static int snd_intelhad_open(struct snd_pcm_substream *substream)
pm_runtime_get(intelhaddata->dev);
- if (had_get_hwstate(intelhaddata)) { + if (intelhaddata->drv_status == HAD_DRV_DISCONNECTED) { dev_dbg(intelhaddata->dev, "%s: HDMI cable plugged-out\n", __func__); retval = -ENODEV; @@ -1185,7 +1168,7 @@ static int snd_intelhad_pcm_trigger(struct snd_pcm_substream *substream, switch (cmd) { case SNDRV_PCM_TRIGGER_START: /* Disable local INTRs till register prgmng is done */ - if (had_get_hwstate(intelhaddata)) { + if (intelhaddata->drv_status == HAD_DRV_DISCONNECTED) { dev_dbg(intelhaddata->dev, "_START: HDMI cable plugged-out\n"); retval = -ENODEV; @@ -1245,7 +1228,7 @@ static int snd_intelhad_pcm_prepare(struct snd_pcm_substream *substream) runtime = substream->runtime; had_stream = &intelhaddata->stream_data;
- if (had_get_hwstate(intelhaddata)) { + if (intelhaddata->drv_status == HAD_DRV_DISCONNECTED) { dev_dbg(intelhaddata->dev, "%s: HDMI cable plugged-out\n", __func__); retval = -ENODEV; @@ -1329,6 +1312,9 @@ static snd_pcm_uframes_t snd_intelhad_pcm_pointer(
intelhaddata = snd_pcm_substream_chip(substream);
+ if (intelhaddata->drv_status == HAD_DRV_DISCONNECTED) + return SNDRV_PCM_POS_XRUN; + if (intelhaddata->flag_underrun) { intelhaddata->flag_underrun = false; return SNDRV_PCM_POS_XRUN; @@ -1614,7 +1600,7 @@ static int had_process_buffer_done(struct snd_intelhad *intelhaddata)
spin_unlock_irqrestore(&intelhaddata->had_spinlock, flag_irqs);
- if (had_get_hwstate(intelhaddata)) { + if (intelhaddata->drv_status == HAD_DRV_DISCONNECTED) { dev_dbg(intelhaddata->dev, "HDMI cable plugged-out\n"); return 0; }