diff --git a/drivers/dma/dw/regs.h b/drivers/dma/dw/regs.h
index e8f92b2..848e232 100644
--- a/drivers/dma/dw/regs.h
+++ b/drivers/dma/dw/regs.h
@@ -281,6 +281,7 @@
 	/* channels */
 	struct dw_dma_chan	*chan;
 	u8			all_chan_mask;
+	u8			in_use;
 
 	/* hardware configuration */
 	unsigned char		nr_masters;