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| author | Ohad Ben-Cohen <ohad@wizery.com> | 2011-09-02 13:32:34 -0400 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2011-09-05 15:15:14 +0200 |
| commit | 9e28547f887c3040747d8422e1feef79bea93bd8 (patch) | |
| tree | fd00d3147a680c645dd31b73282acbe4efe23766 /drivers/iommu/msm_iommu.c | |
| parent | c6a389f123b9f68d605bb7e0f9b32ec1e3e14132 (diff) | |
| download | lwn-9e28547f887c3040747d8422e1feef79bea93bd8.tar.gz lwn-9e28547f887c3040747d8422e1feef79bea93bd8.zip | |
iommu/msm: ->unmap() should return order of unmapped page
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>
Diffstat (limited to 'drivers/iommu/msm_iommu.c')
| -rw-r--r-- | drivers/iommu/msm_iommu.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/iommu/msm_iommu.c b/drivers/iommu/msm_iommu.c index 1a584e077c61..d1733f672f16 100644 --- a/drivers/iommu/msm_iommu.c +++ b/drivers/iommu/msm_iommu.c @@ -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; |