From 5e1b612cb16f446996398bd23b6cd59ea0206938 Mon Sep 17 00:00:00 2001 From: Ohad Ben-Cohen Date: Fri, 2 Sep 2011 13:32:33 -0400 Subject: iommu/omap: ->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. Fix omap_iommu_unmap() to do so and adopt omap-iovmm accordingly. Signed-off-by: Ohad Ben-Cohen Signed-off-by: Joerg Roedel --- drivers/iommu/omap-iommu.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-) (limited to 'drivers/iommu/omap-iommu.c') diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c index 4311bc32cfa6..bd5f6064c74a 100644 --- a/drivers/iommu/omap-iommu.c +++ b/drivers/iommu/omap-iommu.c @@ -1081,18 +1081,13 @@ static int omap_iommu_unmap(struct iommu_domain *domain, unsigned long da, struct omap_iommu_domain *omap_domain = domain->priv; struct omap_iommu *oiommu = omap_domain->iommu_dev; struct device *dev = oiommu->dev; - size_t bytes = PAGE_SIZE << order; - size_t ret; + size_t unmap_size; - dev_dbg(dev, "unmapping da 0x%lx size 0x%x\n", da, bytes); + dev_dbg(dev, "unmapping da 0x%lx order %d\n", da, order); - ret = iopgtable_clear_entry(oiommu, da); - if (ret != bytes) { - dev_err(dev, "entry @ 0x%lx was %d; not %d\n", da, ret, bytes); - return -EINVAL; - } + unmap_size = iopgtable_clear_entry(oiommu, da); - return 0; + return unmap_size ? get_order(unmap_size) : -EINVAL; } static int -- cgit