On 2021-07-16 12:33 a.m., Christoph Hellwig wrote:
On Thu, Jul 15, 2021 at 10:45:44AM -0600, Logan Gunthorpe wrote:
quoted
@@ -194,6 +194,8 @@ static int __dma_map_sg_attrs(struct device *dev, struct scatterlist *sg,
else
ents = ops->map_sg(dev, sg, nents, dir, attrs);
+ WARN_ON_ONCE(ents == 0);
Turns this into a negative error code while we're at it, just to keep
the callers sane?
Sure thing. All the feedback makes sense, we'll fix it up and send a v2
in due course.
Thanks,
Logan
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