struct bcm6348_dma_desc *dma_desc = dma_desc = ch_priv->dma_ring;
int ret;
+ if (!ch_priv->running)
+ return -EINVAL;
+
/* get dma ring descriptor address */
dma_desc += ch_priv->desc_id;
struct bcm6348_dma_desc *dma_desc;
uint16_t status;
+ if (!ch_priv->running)
+ return -EINVAL;
+
/* flush cache */
bcm6348_iudma_fdc(src, len);