[Linaro-mm-sig] [PATCH v3 02/19] iommu: fix initialization without 'add_device' callback

IOMMU drivers can be initialized from of_iommu helpers. Such drivers don't need to provide device_add callbacks to operate properly, so there is no need to fail initialization if the callback is missing.

Signed-off-by: Marek Szyprowski m.szyprowski@samsung.com --- drivers/iommu/iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index ed8b04867b1f..02f798b7e295 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -737,7 +737,7 @@ static int add_iommu_group(struct device *dev, void *data) const struct iommu_ops *ops = cb->ops;

if (!ops->add_device) - return -ENODEV; + return 0;

WARN_ON(dev->iommu_group);