In a modular build of the iommu code it's possible that the arch iommu code isn't loaded when trying to enable the iommu. Instead of blindly following a null pointer return -NODEV in that case.
Signed-off-by: Martin Hostettler <[email protected]> --- arch/arm/plat-omap/iommu.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) 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); -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
