drivers:USB receive buffer size

[GoogleCodeExporter]

AT91SAM9261_RCV_BUFFER is too high (128 Ko).
It is possible to negociate small buffer size for Mass Storage Device profil.

1. change AT91SAM9261_RCV_BUFFER to 64 Ko for example and compile
2. create a dummy test

3. open /dev/usbdp0 and /dev/usbmsd
4. mount /dev/usbmsd on /dev/usbdp0
5. create /dev/umass0
6. close /dev/usbmsd and /dev/usbdp0
7. open dev/umass0

8. plug USB cable on your host
9. make a transfert to your target bigger than 120 Ko
10. watch usbmon output

Original issue reported on code.google.com by [email protected] on 13 Feb 2012 at 2:32