On Sun, Feb 12, 2006 at 07:28:34PM -0700, Dwight Tovey wrote: > > Alan Stern said: > > > > It could simply be a case of hardware (in the computer's USB controller) > > that's not quite up to snuff. 2.6 transfers data to/from USB mass > > storage devices faster than 2.4; perhaps the controller can't handle it > > perfectly. > > > > Sorry I can't offer any more help. At least you do have 2.4.25 as a > > fallback position. > > > > I'm pretty sure it is the hardware. We've found that running the same > tests on different systems with decent USB controllers works fine. If we > could, we would move to better USB hardware. > > You mentioned that 2.6 kernels transfer data faster than 2.4 and that our > current controllers probably can't handle the increased speed. Is there > any way that to slow the transfer rate?
You could lower max_sectors in the SCSI device structure (either via sysfs
or scsiglue.c).
You could also add an inter-command delay (similar to what the code does
for Genesys logic devices).
Matt
--
Matthew Dharm Home: [EMAIL PROTECTED]
Maintainer, Linux USB Mass Storage Driver
Way to go, lava boy.
-- Stef to Greg
User Friendly, 3/26/1998
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