static void sba_unmap_sg_attrs()

in hp/common/sba_iommu.c [1528:1565]

• 30 lines of code
• 3 McCabe index (conditional complexity)

static void sba_unmap_sg_attrs(struct device *dev, struct scatterlist *sglist,
			       int nents, enum dma_data_direction dir,
			       unsigned long attrs)
{
#ifdef ASSERT_PDIR_SANITY
	struct ioc *ioc;
	unsigned long flags;
#endif

	DBG_RUN_SG("%s() START %d entries,  %p,%x\n",
		   __func__, nents, sba_sg_address(sglist), sglist->length);

#ifdef ASSERT_PDIR_SANITY
	ioc = GET_IOC(dev);
	ASSERT(ioc);

	spin_lock_irqsave(&ioc->res_lock, flags);
	sba_check_pdir(ioc,"Check before sba_unmap_sg_attrs()");
	spin_unlock_irqrestore(&ioc->res_lock, flags);
#endif

	while (nents && sglist->dma_length) {

		sba_unmap_page(dev, sglist->dma_address, sglist->dma_length,
			       dir, attrs);
		sglist = sg_next(sglist);
		nents--;
	}

	DBG_RUN_SG("%s() DONE (nents %d)\n", __func__,  nents);

#ifdef ASSERT_PDIR_SANITY
	spin_lock_irqsave(&ioc->res_lock, flags);
	sba_check_pdir(ioc,"Check after sba_unmap_sg_attrs()");
	spin_unlock_irqrestore(&ioc->res_lock, flags);
#endif

}