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41 results

libusbhost

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    Remove urb request size maximum.
    Jerry Zhang authored 
    The 16kB maximum for transfers was removed from
the kernel in 3.3. Devio has since supported
arbitrary transfer sizes through scatter gather.

See the following kernel patches for context:
"USB: change the memory limits in usbfs URB submission"
"usbdevfs: Use scatter-gather lists for large bulk transfers"

Bug: 67683483
Test: Run usb_async_test app with USB3 : 38MB/s -> 300MB/s
Change-Id: Ia52440cb725561b0f1db1a75aa1b8ab952585826
    3be61d38
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