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| author | Srinath Mannam <srinath.mannam@broadcom.com> | 2020-09-14 12:53:19 +0530 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2021-06-08 14:15:02 +0200 |
| commit | 571f316074a203e979ea90211d9acf423dfe5f46 (patch) | |
| tree | 4d192b1c738aefc0bb21044681065a1477a4da55 /drivers/iommu | |
| parent | 8124c8a6b35386f73523d27eacb71b5364a68c4c (diff) | |
| download | linux-571f316074a203e979ea90211d9acf423dfe5f46.tar.gz linux-571f316074a203e979ea90211d9acf423dfe5f46.tar.bz2 linux-571f316074a203e979ea90211d9acf423dfe5f46.zip | |
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.c | 6 |
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; } |