From owner-freebsd-usb@FreeBSD.ORG  Thu Feb 14 22:16:32 2013
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Date: Thu, 14 Feb 2013 14:16:31 -0800 (PST)
From: Aman Sawrup <aman.sawrup@bluecoat.com>
To: freebsd-usb@freebsd.org
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 <201302090001.57258.hselasky@c2i.net> <51194A19.40203@bluecoat.com>
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Subject: Re: Reading 1024 bytes from mass storage device using 3 frames
 gives USB_ERR_STALLED
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Hi Hans,

Is it possible to do the following:

1. Set frame 0 length to 200 bytes
2. usbd_transfer_submit()
3. Wait for USB_ST_TRANSFERRED
4. Set frame 0 length to 512 bytes
5. Set frame 1 length to 312 bytes
6. usbd_transfer_submit()

Effectively, send 200 bytes in first transfer, then send remaining 724 bytes
in second transfer.

Thanks
Aman



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