Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.13 682/800] iommu/dma: Fix IOVA reserve dma ranges | Date | Mon, 12 Jul 2021 08:11:45 +0200 |
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From: Srinath Mannam <srinath.mannam@broadcom.com>
[ 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> --- 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 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; } -- 2.30.2
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