[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>

1 files changed, 3 insertions, 0 deletions

diff --git a/sound/pci/rme9652/hdsp.c b/sound/pci/rme9652/hdsp.c
index 2411f0b396b4..ff26a3672d40 100644
--- 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