debug_dma_unmap_sg 36 include/linux/dma-debug.h extern void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist, debug_dma_unmap_sg 336 include/linux/dma-mapping.h debug_dma_unmap_sg(dev, sg, nents, dir); debug_dma_unmap_sg 1434 kernel/dma/debug.c EXPORT_SYMBOL(debug_dma_unmap_sg);