[ALSA] snd_usb_caiaq: make high sample rates work with A8DJ

[profile/ivi/kernel-x86-ivi.git] / sound / usb / caiaq / caiaq-audio.c

diff --git a/sound/usb/caiaq/caiaq-audio.c b/sound/usb/caiaq/caiaq-audio.c
index ebf3281..24970a5 100644 (file)
--- a/sound/usb/caiaq/caiaq-audio.c
+++ b/sound/usb/caiaq/caiaq-audio.c
@@ -39,7 +39,8 @@
 #define BYTES_PER_SAMPLE       3
 #define BYTES_PER_SAMPLE_USB   4
 #define MAX_BUFFER_SIZE                (128*1024)
-                                
+#define MAX_ENDPOINT_SIZE      512
+
 #define ENDPOINT_CAPTURE       2
 #define ENDPOINT_PLAYBACK      6
 
@@ -221,7 +222,10 @@ static int snd_usb_caiaq_pcm_prepare(struct snd_pcm_substream *substream)
        
        bpp = ((runtime->rate / 8000) + CLOCK_DRIFT_TOLERANCE)
                * bytes_per_sample * CHANNELS_PER_STREAM * dev->n_streams;
-       
+
+       if (bpp > MAX_ENDPOINT_SIZE)
+               bpp = MAX_ENDPOINT_SIZE;
+
        ret = snd_usb_caiaq_set_audio_params(dev, runtime->rate,
                                             runtime->sample_bits, bpp);
        if (ret)