From: "Bryan Wu" <[EMAIL PROTECTED]>
To: <linux-usb-devel@lists.sourceforge.net>
Subject: [linux-usb-devel] How to handle NAK in HCD driver?
Date: Fri, 14 Apr 2006 17:31:05 +0800
Hi alls:
I am developing a HCD driver for my own SoC including USB OTG controller.
Sometimes my code will run into endless loop for NAK response from device.
Sometimes my code can run successfully.
And a strange thing is the HCD driver will be failed at the beginning when
I
disable the debug message like printk.
I have met such problem before. Such problem is alway caused by an illegal
use of pointer. As adding or removing printks only change the structure of
your stack.
May this help you.
Ethan.
So it is very difficult for me to find the problems.
Could you give me some idea about this?
My kernel is Linux 2.6.15 and my code structure is based on the sl811 and
isp116x.
Thanks a lot
Best Regards
Bryan Wu
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