Commit 8b1cce9f authored Dec 20, 2018 by Thierry Reding Committed by Christoph Hellwig Dec 20, 2018

dma-mapping: fix inverted logic in dma_supported



The cleanup in commit 356da6d0 ("dma-mapping: bypass indirect calls
for dma-direct") accidentally inverted the logic in the check for the
presence of a ->dma_supported() callback. Switch this back to the way it
was to prevent a crash on boot.

Fixes: 356da6d0 ("dma-mapping: bypass indirect calls for dma-direct")
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

parent 06d4dd2f

kernel/dma/mapping.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -406,7 +406,7 @@ int dma_supported(struct device *dev, u64 mask)

		if (dma_is_direct(ops))
		return dma_direct_supported(dev, mask);
		if (ops->dma_supported)
		if (!ops->dma_supported)
		return 1;
		return ops->dma_supported(dev, mask);
		}