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omap iommu: Gracefully fail iommu_enable if no arch_iommu is registered.

Message ID 1295387104-17885-1-git-send-email-martin@neutronstar.dyndns.org (mailing list archive)
State Accepted
Commit a3d6038b3ef9e8ae9986435b13a61597c946357b
Delegated to: Tony Lindgren
Headers show

Commit Message

Martin Hostettler Jan. 18, 2011, 9:45 p.m. UTC 
None
diff mbox

Patch

diff --git a/arch/arm/plat-omap/iommu.c b/arch/arm/plat-omap/iommu.c
index 6cd151b..c1c6887 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 -ENODEV;
+
 	clk_enable(obj->clk);
 
 	err = arch_iommu->enable(obj);