[Sound-open-firmware] [PATCH] host: verify number of period > 0

[Liam Girdwood]

Check number of periods is > 0 other wise return an error and emit some
trace.

Signed-off-by: Liam Girdwood <liam.r.girdwood at linux.intel.com>
---
 src/audio/host.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/audio/host.c b/src/audio/host.c
index b731dd6..8f09952 100644
--- a/src/audio/host.c
+++ b/src/audio/host.c
@@ -412,6 +412,12 @@ static int host_params(struct comp_dev *dev)
 		hd->period_count = cconfig->periods_source;
 	}
 
+	/* validate period count */
+	if (hd->period_count == 0) {
+		trace_host_error("eS0");
+		return -EINVAL;
+	}
+
 	/* calculate period size based on config */
 	hd->period_bytes = dev->frames * comp_frame_bytes(dev);
 	if (hd->period_bytes == 0) {
-- 
2.14.1