ALSA: ice1712: fix: lock samplerate when samplerate locking is enabled

I found that the sampling rate locking setting of the ice1712 sound driver
was only half-respected : when the driver was locked to, let's say, 44100Hz,
and a usermode app was requesting 48000Hz playback, the request was succesful
although the soundcard would continue to run at 44100Hz.

Here's a patch that will make those requests to fail.

Signed-off-by: Sebastien Alaiwan <sebastien.alaiwan@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/ice1712/ice1712.c b/sound/pci/ice1712/ice1712.c
index c7cff6f..fb61943 100644 (file)
--- a/sound/pci/ice1712/ice1712.c
+++ b/sound/pci/ice1712/ice1712.c
@@ -1180,6 +1180,10 @@ static int snd_ice1712_playback_pro_open(struct snd_pcm_substream *substream)
        snd_pcm_set_sync(substream);
        snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
        snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
        snd_pcm_set_sync(substream);
        snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
        snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);

+       if (is_pro_rate_locked(ice)) {
+               runtime->hw.rate_min = PRO_RATE_DEFAULT;
+               runtime->hw.rate_max = PRO_RATE_DEFAULT;
+       }

 
        if (ice->spdif.ops.open)
                ice->spdif.ops.open(ice, substream);
 
        if (ice->spdif.ops.open)
                ice->spdif.ops.open(ice, substream);


@@ -1197,6 +1201,11 @@ static int snd_ice1712_capture_pro_open(struct snd_pcm_substream *substream)
        snd_pcm_set_sync(substream);
        snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
        snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
        snd_pcm_set_sync(substream);
        snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
        snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);

+       if (is_pro_rate_locked(ice)) {
+               runtime->hw.rate_min = PRO_RATE_DEFAULT;
+               runtime->hw.rate_max = PRO_RATE_DEFAULT;
+       }
+

        return 0;
 }
 
        return 0;
 }