(gdb) list *bcm43xx_dma_handle_txstatus+0x21d
0x169d is in bcm43xx_dma_handle_txstatus (include/asm/dma-mapping.h:91).
86	static inline void
87	dma_unmap_single(struct device *dev, dma_addr_t addr,size_t size,
88			 int direction)
89	{
90		BUG_ON(!valid_dma_direction(direction));
91		dma_ops->unmap_single(dev, addr, size, direction);
92	}
93	
94	#define dma_map_page(dev,page,offset,size,dir) \
95		dma_map_single((dev), page_address(page)+(offset), (size), (dir))