1USB_BUFFER_UNMAP_SG(9)           USB Core APIs          USB_BUFFER_UNMAP_SG(9)
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NAME

6       usb_buffer_unmap_sg - free DMA mapping(s) for a scatterlist
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SYNOPSIS

9       void usb_buffer_unmap_sg(const struct usb_device * dev, int is_in,
10                                struct scatterlist * sg, int n_hw_ents);
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ARGUMENTS

13       dev
14           device to which the scatterlist will be mapped
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16       is_in
17           mapping transfer direction
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19       sg
20           the scatterlist to unmap
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22       n_hw_ents
23           the positive return value from usb_buffer_map_sg
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DESCRIPTION

26       Reverses the effect of usb_buffer_map_sg.
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29Kernel Hackers Manual 3.10         June 2019            USB_BUFFER_UNMAP_SG(9)
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