D37611.diff
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	diff --git a/sys/compat/linuxkpi/common/include/linux/dma-mapping.h b/sys/compat/linuxkpi/common/include/linux/dma-mapping.h
	--- a/sys/compat/linuxkpi/common/include/linux/dma-mapping.h
	+++ b/sys/compat/linuxkpi/common/include/linux/dma-mapping.h
	@@ -362,7 +362,14 @@
	unsigned long attrs)
	{

	- return (dma_map_sg_attrs(dev, sgt->sgl, sgt->nents, dir, attrs));
	+ int nents = dma_map_sg_attrs(dev, sgt->sgl, sgt->nents, dir, attrs);
	+
	+ if (nents < 0) {
	+ return nents;
	+ } else {
	+ sgt->nents = nents;
	+ return 0;
	+ }
	}

	static inline void