Although I submit these patches as the previous reply suggestion, I
am stilling wondering the IOMMU with USB controller. I think the most
of USB controller didn't need to create entities in IOMMU to support
scatterlist. Once the hcd supports that(sg_tablesize > 0), it could
support infinite scatter pages?
Randy Li (2):
USB: dma: remove unused function prototype
docs: driver-api: usb: update dma info
Documentation/driver-api/usb/dma.rst | 48 +++++++---------------------
include/linux/usb.h | 16 ----------
2 files changed, 11 insertions(+), 53 deletions(-)
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2.41.0