diff options
| -rw-r--r-- | drivers/iommu/of_iommu.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c index 47302b637cc0..42cffb0ee5e2 100644 --- a/drivers/iommu/of_iommu.c +++ b/drivers/iommu/of_iommu.c @@ -264,6 +264,10 @@ void of_iommu_get_resv_regions(struct device *dev, struct list_head *list) prot |= IOMMU_CACHE; maps = of_translate_dma_region(np, maps, &iova, &length); + if (length == 0) { + dev_warn(dev, "Cannot reserve IOVA region of 0 size\n"); + continue; + } type = iommu_resv_region_get_type(dev, &phys, iova, length); region = iommu_alloc_resv_region(iova, length, prot, type, |