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 <ohad@wizery.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
diff --git a/drivers/iommu/omap-iovmm.c b/drivers/iommu/omap-iovmm.c
index 39bdb92..e8fdb88 100644
--- a/drivers/iommu/omap-iovmm.c
+++ b/drivers/iommu/omap-iovmm.c
@@ -480,7 +480,7 @@
order = get_order(bytes);
err = iommu_unmap(domain, start, order);
- if (err)
+ if (err < 0)
break;
dev_dbg(obj->dev, "%s: unmap %08x(%x) %08x\n",