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iommu/msm: ->unmap() should return order of unmapped page

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Users of the IOMMU API (kvm specifically) assume that iommu_unmap()
returns the order of the unmapped page (on success).

Fix msm_iommu_unmap() accordingly.

Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Cc: Stepan Moskovchenko <stepanm@codeaurora.org>
Cc: David Brown <davidb@codeaurora.org>
Acked-by: David Brown <davidb@codeaurora.org>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Ohad Ben-Cohen 2011-09-02 13:32:34 -04:00 committed by Joerg Roedel
parent c6a389f123
commit 9e28547f88
1 changed files with 7 additions and 0 deletions
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7
drivers/iommu/msm_iommu.c
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@ -543,6 +543,13 @@ static int msm_iommu_unmap(struct iommu_domain *domain, unsigned long va,
}
ret = __flush_iotlb(domain);
/*
* the IOMMU API requires us to return the order of the unmapped
* page (on success).
*/
if (!ret)
ret = order;
fail:
spin_unlock_irqrestore(&msm_iommu_lock, flags);
return ret;