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| author | Srinath Mannam <srinath.mannam@broadcom.com> | 2020-09-14 12:53:19 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-14 16:56:42 +0200 |
| commit | 45a3d00eafb7112a1ee62c842124d750f6ff5551 (patch) | |
| tree | b96847147ec9dcaca2a69be74aaedbc361997aa8 | |
| parent | ad736838155c997a06c4da0b1309d96667ae61fa (diff) | |
| download | linux-stable-45a3d00eafb7112a1ee62c842124d750f6ff5551.tar.gz linux-stable-45a3d00eafb7112a1ee62c842124d750f6ff5551.tar.bz2 linux-stable-45a3d00eafb7112a1ee62c842124d750f6ff5551.zip | |
iommu/dma: Fix IOVA reserve dma ranges
[ Upstream commit 571f316074a203e979ea90211d9acf423dfe5f46 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -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 0cbcd3fc3e7e..840dd2b66ce7 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -216,9 +216,11 @@ 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; } |