diff --git a/arch/arm/cpu/mmu.c b/arch/arm/cpu/mmu.c
index 8465d1a..bb067e3 100644
--- a/arch/arm/cpu/mmu.c
+++ b/arch/arm/cpu/mmu.c
@@ -155,7 +155,7 @@
 	return (void *)(phys + dma_coherent_offset);
 }
 
-void dma_free_coherent(void *mem)
+void dma_free_coherent(void *mem, size_t size)
 {
 	free(mem - dma_coherent_offset);
 }
diff --git a/arch/arm/include/asm/mmu.h b/arch/arm/include/asm/mmu.h
index d96c728..9ebc2cd 100644
--- a/arch/arm/include/asm/mmu.h
+++ b/arch/arm/include/asm/mmu.h
@@ -17,7 +17,7 @@
 
 #ifdef CONFIG_MMU
 void *dma_alloc_coherent(size_t size);
-void dma_free_coherent(void *mem);
+void dma_free_coherent(void *mem, size_t size);
 
 void dma_clean_range(unsigned long, unsigned long);
 void dma_flush_range(unsigned long, unsigned long);
@@ -26,12 +26,17 @@
 void *phys_to_virt(unsigned long phys);
 
 #else
+static inline int mmu_init(void)
+{
+	return -EINVAL;
+}
+
 static inline void *dma_alloc_coherent(size_t size)
 {
 	return xmemalign(4096, size);
 }
 
-static inline void dma_free_coherent(void *mem)
+static inline void dma_free_coherent(void *mem, size_t size)
 {
 	free(mem);
 }
diff --git a/drivers/usb/gadget/fsl_udc.c b/drivers/usb/gadget/fsl_udc.c
index c321e8f..1e4d4b0 100644
--- a/drivers/usb/gadget/fsl_udc.c
+++ b/drivers/usb/gadget/fsl_udc.c
@@ -560,7 +560,7 @@
 		if (j != req->dtd_count - 1) {
 			next_td = curr_td->next_td_virt;
 		}
-		dma_free_coherent(curr_td);
+		dma_free_coherent(curr_td, sizeof(struct ep_td_struct));
 	}
 
 	dma_inv_range((unsigned long)req->req.buf,