On Tue, 8 Jun 2004, Matthias Bl�sing wrote:
> My last problem (control timeout on ep0in with Cypress Chipset) exists
> further. Now I tried to use the case with a harddisk and retested with
> the dvd burner and saw an interesting phaenomen.
>
> It works flawless, when I access it in writing mode. Burning CDs and
> DVDs works without a failure, but reading kills the device.
>
> I.E.:
> I copied 1 GB to my harddrive (via USB2) and then tried to copy them
> back. I got 123 MB back, before the datastream died (looking at the
> access led of the HD)
>
> Any Ideas?
>
> My Setup:
> - Kernel 2.6.7-rc2-bk1
> - Patch:
> http://marc.theaimsgroup.com/?l=linux-usb-devel&m=108593392122076&q=raw
> - EHCI Controller: Combo Cardbus Card USB 2+ Firewire (ALi Corporation
> USB 2.0 Controller)
>
> By the way I tried removing the ehci_hcd and use the Enclosure as an
> USB1 device, but then sometimes it works sometimes the copy dies.
Maybe this patch will help. It was effective for some people using a
Genesys Logic chipset, not the same as your Cypress but it seemed to have
the same kind of failures. Let me know what happens.
Alan Stern
===== drivers/usb/storage/usb.c 1.119 vs edited =====
--- 1.119/drivers/usb/storage/usb.c Sun Jun 13 16:09:07 2004
+++ edited/drivers/usb/storage/usb.c Mon Jun 21 10:51:41 2004
@@ -359,6 +359,7 @@
/* we've got a command, let's do it! */
else {
US_DEBUG(usb_stor_show_command(us->srb));
+ udelay(300);
us->proto_handler(us->srb, us);
}
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