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iommu: fix initialization without 'add_device' callback

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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.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Marek Szyprowski 2014-11-19 11:15:31 +00:00 committed by Will Deacon
parent 7eba1d5148
commit 461bfb3fe7
1 changed files with 1 additions and 1 deletions
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2
drivers/iommu/iommu.c
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@ -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);