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Commit 1a59c539 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'iommu-fixes-v4.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu 

Pull IOMMU fixes from Joerg Roedel:

 - compile-time fixes (warnings and failures)

 - a bug in iommu core code which could cause the group->domain pointer
   to be falsly cleared

 - fix in scatterlist handling of the ARM common DMA-API code

 - stall detection fix for the Rockchip IOMMU driver

* tag 'iommu-fixes-v4.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/vt-d: Silence an uninitialized variable warning
  iommu/rockchip: Fix "is stall active" check
  iommu: Don't overwrite domain pointer when there is no default_domain
  iommu/dma: Restore scatterlist offsets correctly
  iommu: provide of_xlate pointer unconditionally
parents 3c968887 0b74ecdf

drivers/iommu/dma-iommu.c

+2 −2
Original line number Diff line number Diff line
@@ -403,7 +403,7 @@ static int __finalise_sg(struct device *dev, struct scatterlist *sg, int nents, 
		unsigned int s_length = sg_dma_len(s);

		unsigned int s_dma_len = s->length;



		s->offset = s_offset;

		s->offset += s_offset;

		s->length = s_length;

		sg_dma_address(s) = dma_addr + s_offset;

		dma_addr += s_dma_len;
@@ -422,7 +422,7 @@ static void __invalidate_sg(struct scatterlist *sg, int nents) 


	for_each_sg(sg, s, nents, i) {

		if (sg_dma_address(s) != DMA_ERROR_CODE)

			s->offset = sg_dma_address(s);

			s->offset += sg_dma_address(s);

		if (sg_dma_len(s))

			s->length = sg_dma_len(s);

		sg_dma_address(s) = DMA_ERROR_CODE;

drivers/iommu/intel-iommu.c

+1 −1
Original line number Diff line number Diff line
@@ -2458,7 +2458,7 @@ static struct dmar_domain *get_domain_for_dev(struct device *dev, int gaw) 
	}



	/* register PCI DMA alias device */

	if (req_id != dma_alias && dev_is_pci(dev)) {

	if (dev_is_pci(dev) && req_id != dma_alias) {

		tmp = dmar_insert_one_dev_info(iommu, PCI_BUS_NUM(dma_alias),

					       dma_alias & 0xff, NULL, domain);

drivers/iommu/iommu.c

+2 −1
Original line number Diff line number Diff line
@@ -848,6 +848,7 @@ struct iommu_group *iommu_group_get_for_dev(struct device *dev) 
	if (!group->default_domain) {

		group->default_domain = __iommu_domain_alloc(dev->bus,

							     IOMMU_DOMAIN_DMA);

		if (!group->domain)

			group->domain = group->default_domain;

	}

drivers/iommu/rockchip-iommu.c

+4 −4
Original line number Diff line number Diff line
@@ -315,8 +315,8 @@ static bool rk_iommu_is_stall_active(struct rk_iommu *iommu) 
	int i;



	for (i = 0; i < iommu->num_mmu; i++)

		active &= rk_iommu_read(iommu->bases[i], RK_MMU_STATUS) &

					RK_MMU_STATUS_STALL_ACTIVE;

		active &= !!(rk_iommu_read(iommu->bases[i], RK_MMU_STATUS) &

					   RK_MMU_STATUS_STALL_ACTIVE);



	return active;

}
@@ -327,8 +327,8 @@ static bool rk_iommu_is_paging_enabled(struct rk_iommu *iommu) 
	int i;



	for (i = 0; i < iommu->num_mmu; i++)

		enable &= rk_iommu_read(iommu->bases[i], RK_MMU_STATUS) &

					RK_MMU_STATUS_PAGING_ENABLED;

		enable &= !!(rk_iommu_read(iommu->bases[i], RK_MMU_STATUS) &

					   RK_MMU_STATUS_PAGING_ENABLED);



	return enable;

}

include/linux/iommu.h

+0 −2
Original line number Diff line number Diff line
@@ -195,9 +195,7 @@ struct iommu_ops { 
	/* Get the number of windows per domain */

	u32 (*domain_get_windows)(struct iommu_domain *domain);



#ifdef CONFIG_OF_IOMMU

	int (*of_xlate)(struct device *dev, struct of_phandle_args *args);

#endif



	unsigned long pgsize_bitmap;

	void *priv;