diff options
| author | Christoph Hellwig <hch@lst.de> | 2018-04-12 10:46:01 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2018-10-19 08:42:20 +0200 |
| commit | 21bb9d64c5adc0a87c3736bc9a2d386023b88a5b (patch) | |
| tree | a1440a98f279337e692b35a14b219eccdf713bb9 /kernel | |
| parent | dma-direct: respect DMA_ATTR_NO_WARN (diff) | |
| download | linux-21bb9d64c5adc0a87c3736bc9a2d386023b88a5b.tar.xz linux-21bb9d64c5adc0a87c3736bc9a2d386023b88a5b.zip | |
swiotlb: remove a pointless comment
This comments describes an aspect of the map_sg interface that isn't
even exploited by swiotlb.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/dma/swiotlb.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index 4f8a6dbf0b60..9062b14bc7f4 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -925,12 +925,6 @@ swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr, * appropriate dma address and length. They are obtained via * sg_dma_{address,length}(SG). * - * NOTE: An implementation may be able to use a smaller number of - * DMA address/length pairs than there are SG table elements. - * (for example via virtual mapping capabilities) - * The routine returns the number of addr/length pairs actually - * used, at most nents. - * * Device ownership issues as mentioned above for swiotlb_map_page are the * same here. */ |