From 8b1cce9f5832a8eda17d37a3c49fb7dd2d650f46 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Thu, 20 Dec 2018 17:35:47 +0100 Subject: [PATCH] dma-mapping: fix inverted logic in dma_supported The cleanup in commit 356da6d0cde3 ("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: 356da6d0cde3 ("dma-mapping: bypass indirect calls for dma-direct") Signed-off-by: Thierry Reding Signed-off-by: Christoph Hellwig --- kernel/dma/mapping.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/dma/mapping.c b/kernel/dma/mapping.c index fc84c81029d9..d7c34d2d1ba5 100644 --- a/kernel/dma/mapping.c +++ b/kernel/dma/mapping.c @@ -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); } -- 2.30.2