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Commit 35225890 authored by Liam Mark's avatar Liam Mark Committed by Patrick Daly
Browse files

iommu: msm: use list_for_each_entry_safe for deletion 



Use list_for_each_entry_safe to safely delete mappings while
iterating over the mappings list.

CRs-Fixed: 1067012
Change-Id: I5326ee8e58d291b1d9b07649b87632d7e9102e0d
Signed-off-by: default avatarLiam Mark <lmark@codeaurora.org>
Signed-off-by: default avatarPatrick Daly <pdaly@codeaurora.org>
parent ebc95a77

drivers/iommu/msm_dma_iommu_mapping.c

+3 −1
Original line number Diff line number Diff line
@@ -347,10 +347,12 @@ int msm_dma_unmap_all_for_dev(struct device *dev) 
	meta_node = rb_first(root);

	while (meta_node) {

		struct msm_iommu_map *iommu_map;

		struct msm_iommu_map *iommu_map_next;



		meta = rb_entry(meta_node, struct msm_iommu_meta, node);

		mutex_lock(&meta->lock);

		list_for_each_entry(iommu_map, &meta->iommu_maps, lnode)

		list_for_each_entry_safe(iommu_map, iommu_map_next,

						&meta->iommu_maps, lnode)

			if (iommu_map->dev == dev)

				if (!kref_put(&iommu_map->ref,

						msm_iommu_map_release))