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amd_iommu: fix lock imbalance

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In alloc_coherent there is an omitted unlock on the path where mapping
fails. Add the unlock.

[ Impact: fix lock imbalance in alloc_coherent ]

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Jiri Slaby 2009-05-28 09:54:48 +02:00 committed by Joerg Roedel
parent c1eee67b2d
commit 367d04c4ec
1 changed files with 3 additions and 1 deletions
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4
arch/x86/kernel/amd_iommu.c
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@ -1541,8 +1541,10 @@ static void *alloc_coherent(struct device *dev, size_t size,
*dma_addr = __map_single(dev, iommu, domain->priv, paddr,
size, DMA_BIDIRECTIONAL, true, dma_mask);
if (*dma_addr == bad_dma_address)
if (*dma_addr == bad_dma_address) {
spin_unlock_irqrestore(&domain->lock, flags);
goto out_free;
}
iommu_completion_wait(iommu);