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authorSrinath Mannam <srinath.mannam@broadcom.com>2020-09-14 12:53:19 +0530
committerJoerg Roedel <jroedel@suse.de>2021-06-08 14:15:02 +0200
commit571f316074a203e979ea90211d9acf423dfe5f46 (patch)
tree4d192b1c738aefc0bb21044681065a1477a4da55 /drivers/iommu
parent8124c8a6b35386f73523d27eacb71b5364a68c4c (diff)
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iommu/dma: Fix IOVA reserve dma ranges
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> Reviewed-by: Robin Murphy <robin.murphy@arm.com> Tested-by: Sven Peter <sven@svenpeter.dev> Link: https://lore.kernel.org/r/20200914072319.6091-1-srinath.mannam@broadcom.com Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/dma-iommu.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index 7bcdd1205535..95e7349ac3f1 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -243,9 +243,11 @@ resv_iova:
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;
}