hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

dma-mapping: fix inverted logic in dma_supported 

The cleanup in commit 356da6d0cd ("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: 356da6d0cd ("dma-mapping: bypass indirect calls for dma-direct")
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Thierry Reding 2018-12-20 17:35:47 +01:00 committed by Christoph Hellwig
parent 06d4dd2f2c
commit 8b1cce9f58
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
kernel/dma/mapping.c
View File

@ -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);
}