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.man...@broadcom.com>
---
Changes from v2:
Modify error message with useful information based on Bjorn's comments.
Changes from v1:
Removed unnecessary changes based on Robin's review comments.
drivers/iommu/dma-iommu.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index 5141d49a046b..5b9791f35c5e 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -217,9 +217,11 @@ 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");
+ dev_err(&dev->dev,
+ "Failed to reserve IOVA [%#010llx-%#010llx]\n",
+ start, end);
return -EINVAL;
}
--
2.17.1
