Messages in this thread Patch in this message | | | From | Srinath Mannam <> | Subject | [PATCH v2] iommu/dma: Fix IOVA reserve dma ranges | Date | Fri, 11 Sep 2020 15:55:34 +0530 |
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Fix IOVA reserve failure in the case when address of first memory region listed in dma-ranges is equal to 0x0.
Fixes: aadad097cd46f ("iommu/dma: Reserve IOVA for PCIe inaccessible DMA address") Signed-off-by: Srinath Mannam <srinath.mannam@broadcom.com> --- Changes from v1: Removed unnecessary changes based on Robin's review comments.
drivers/iommu/dma-iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index 5141d49a046b..682068a9aae7 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -217,7 +217,7 @@ static int iova_reserve_pci_windows(struct pci_dev *dev, lo = iova_pfn(iovad, start); hi = iova_pfn(iovad, end); reserve_iova(iovad, lo, hi); - } else { + } else if (end < start) { /* dma_ranges list should be sorted */ dev_err(&dev->dev, "Failed to reserve IOVA\n"); return -EINVAL; -- 2.17.1
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