[1/4] omap iommu: Check existence of arch_iommu

Commit Message

Sakari Ailus March 25, 2011, 3:17 p.m. UTC

None

Patch

diff --git a/arch/arm/plat-omap/iommu.c b/arch/arm/plat-omap/iommu.c
index b1107c0..f0fea0b 100644
--- a/arch/arm/plat-omap/iommu.c
+++ b/arch/arm/plat-omap/iommu.c
@@ -104,6 +104,9 @@  static int iommu_enable(struct iommu *obj)
 	if (!obj)
 		return -EINVAL;
 
+	if (!arch_iommu)
+		return -ENOENT;
+
 	clk_enable(obj->clk);
 
 	err = arch_iommu->enable(obj);