Hi all,
I am seeing some strange behaviour in my code when moving from kernel 2.4 to 2.6. In particular, the working system is:
Linux 2.4.22-xfs armv5b unknown
and the two non-working kernels are:
Linux 2.6.11-rc4 mips unknown Linux 2.6.11-gentoo-r2 i686 Intel(R) Pentium(R) 4 CPU 2.40GHz
The device being used is high-speed USB 2.0, connected directly to the EHCI root hub.
My code uses USBDEVFS_BULK ioctls with a timeout of 11000 msec to communicate with the device from user space.
Here's a sequence of steps and what I am seeing:
1) Plug device in.
2) Run program for first time. It works and manages to transfer 100s of MBytes of data.
3) Running program again (any number of times) results in: usb 1-1: puppy timed out on ep2in usb 1-1: usbfs: USBDEVFS_BULK failed ep 0x82 len 4096 ret -145
4) Disconnecting and reconnecting the USB cable seems to reset the state well enough to fix the issue.
The issue could be with 2.6, but it is just as possible that my code is not doing the right thing. The source to my program is available via CVS:
cvs -d:pserver:[EMAIL PROTECTED]:/cvsroot/puppy login cvs -d:pserver:[EMAIL PROTECTED]:/cvsroot/puppy co puppy
I would appreciate any and all help I can get. I'd be very happy to do whatever I can to get to the bottom of this.
Best regards,
Peter.
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