[ALSA] hdsp - Fix zero division

Fix zero-division bug in the calculation dds offset.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

diff --git a/sound/pci/rme9652/hdsp.c b/sound/pci/rme9652/hdsp.c
index 2411f0b396b4adad390047a6ef80948ef244cb8c..ff26a3672d403152b81fe946c71c4b05f601bef4 100644 (file)
--- a/sound/pci/rme9652/hdsp.c
+++ b/sound/pci/rme9652/hdsp.c
@@ -3059,6 +3059,9 @@ static int hdsp_dds_offset(struct hdsp *hdsp)
        unsigned int dds_value = hdsp->dds_value;
        int system_sample_rate = hdsp->system_sample_rate;
 
+       if (!dds_value)
+               return 0;
+
        n = DDS_NUMERATOR;
        /*
         * dds_value = n / rate