Hello,
On 07/15/04 17:08:59, Alan Stern wrote:
On Thu, 15 Jul 2004, Thomas Jahns wrote:
> I just compiled 2.6.7 for my notebook (IBM A31) and it works just > fine. Compared to the previous "fix" CPU usage during USB transfer > is much lower. > In contrast to the audio driver (snd_intel8x0) the driver also > seems to handle ACPI and S3 just fine.
just for your information: After I had used the enclosure with above notebook and a NEC CardBus USB 2.0 controller, I now had the opportunity to try a Linux system with the patch mentioned below applied with a PCI NEC controller and it produces the well known problems (usb-storage freezes after a few transfers)
lspci -v -s 02:08.2
0000:02:08.2 USB Controller: NEC Corporation USB 2.0 (rev 02) (prog-if 20 [EHCI])
Subsystem: AFAVLAB Technology Inc: Unknown device 00e0
Flags: bus master, medium devsel, latency 32, IRQ 10
Memory at d3800000 (32-bit, non-prefetchable) [size=256]
Capabilities: <available only to root>
For both of you, there's been a new development. According to the technical support people at Genesys, the delay needs to be moved to a different place. You can try applying the second half (just the part that affects transport.c) of the patch in
http://marc.theaimsgroup.com/?l=linux-usb-devel&m=108914214313516&w=2
If you like you can also try changing the Genesys max_sectors value
from 128 to 64 -- that's what the first part of the patch does but it won't apply to vanilla 2.6.7.
Ciao, Thomas Jahns -- "Computers are good at following instructions, but not at reading your mind." D. E. Knuth, The TeXbook, Addison-Wesley 1984, 1986, 1996, p. 9
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