unsigned long flags= 	  
				STM_DMA_SETUP_CONTEXT_TASK 
				| DIM_1_x_1
				| MODE_SH_COMPATIBILITY;
	
	unsigned long xfer_bytes =4096;
	void* src_buff = kmalloc(xfer_bytes,GFP_KERNEL);
	void * dst_buff = kmalloc(xfer_bytes,GFP_KERNEL);

	int ch_num = request_dma(0,__FUNCTION__);

	if(!ch_num ==0)
		return -ENODEV;
	
	if(src_buff){	
		memset(src_buff,0x4,xfer_bytes);
		
		dma_cache_wback(&src_buff[0],sizeof(u32)*xfer_bytes);	
		dma_cache_wback(&dst_buff[0],sizeof(u32)*xfer_bytes);	

			
		dma_configure_channel(ch_num,flags);
		dma_xfer(ch_num,
				virt_to_phys((void*)src_buff),
				virt_to_phys((void*)dst_buff)
				,xfer_bytes,
				MODE_SH_COMPATIBILITY);
		dma_wait_for_completion(ch_num);

		if(memcmp((void*)src_buff,(void*)dst_buff,xfer_bytes)!=0){
			dump_srcbuff(src_buff,xfer_bytes);
			dump_dstbuff(dst_buff,xfer_bytes);
			panic(" memory does not compare\n");
		}			
		printk("woken up from DMA  -  TEST OK\n");
		kfree((void*)src_buff);
		kfree((void*)dst_buff);
		free_dma(ch_num);
		
		return 0;	
	}
	return -ENOMEM;