> >>> diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c
> >>> index 0a4881e59aa7..3d9b17fe5771 100644
> >>> --- a/kernel/dma/direct.c
> >>> +++ b/kernel/dma/direct.c
> >>> @@ -374,9 +374,11 @@ void dma_direct_unmap_sg(struct device *dev, struct
> >>> scatterlist *sgl,
> >>>struct scat
> On 2021-01-11 15:43, Marc Orr wrote:
minus sta...@vger.kernel.org, per gregkh@'s email.
> > diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c
> > index 0a4881e59aa7..3d9b17fe5771 100644
> > --- a/kernel/dma/direct.c
> > +++ b/kernel/dma/direct.c
> > @@ -374,9 +374,11 @@ void dma_direct_unm
This patch updates dma_direct_unmap_sg() to mark each scatter/gather
entry invalid, after it's unmapped. This fixes two issues:
1. It makes the unmapping code able to tolerate a double unmap.
2. It prevents the NVMe driver from erroneously treating an unmapped DMA
address as mapped.
The bug that
