Messages in this thread | | | Date | Thu, 2 Mar 2006 00:25:35 +0100 | From | Olivier Galibert <> | Subject | Re: MAX_USBFS_BUFFER_SIZE |
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On Wed, Mar 01, 2006 at 02:41:23PM -0800, Greg KH wrote: > On Wed, Mar 01, 2006 at 11:34:30PM +0100, Olivier Galibert wrote: > > As a data point, I have traces of a scanner session including a > > download of a 26Mb binary image using 524288 bytes logical blocks > > physically transferred with 61440 bytes bulk_in frames. Seems stable > > enough. IIRC the scanner-side controller chip has some advanced > > buffering just to handle that kind of bandwidth. > > That's impressive. What are the endpoint sizes on the device that did > this?
Hmmm, the chip is a Genesys gl841, on a canonscan lide 35. And it advertises a 64 bytes wMaxPacketSize on both in and out bulk interfaces. Go figure.
Want the log and/or the lsusb -v?
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