Hi CL Lee,<br>I agree with Greg. The bug what you have encountered may have been fixed in latest kernels .36 or .37-rc.<br>>> I am developing a EHCI host driver for Linux kernel 2.6.29 on a
proprietary SoC. But for weeks now, I am troubleshooting a time out
error from khubd.<br>The arch should be one which linux supports. Also, if it is
proprietary Soc make sure you have the mach-<machine> directory in arch folder.<br><br><br clear="all"><i style="font-family:tahoma,sans-serif;color:rgb(153, 0, 0)"><b>- Bharath H S</b></i><br><br>
<br><br><div class="gmail_quote">On Wed, Dec 22, 2010 at 10:46 AM, Syed Khader <span dir="ltr"><<a href="mailto:sk.syed2@gmail.com">sk.syed2@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div class="im">On Tue, Dec 21, 2010 at 5:18 PM, CL Lee <<a href="mailto:pelangi15@gmail.com">pelangi15@gmail.com</a>> wrote:<br>
> Dear Experts,<br>
><br>
> I am developing a EHCI host driver for Linux kernel 2.6.29 on a proprietary SoC. But for weeks now, I am troubleshooting a time out error from khubd.<br>
><br>
</div>Which SoC? what arch? What is the error message you see?<br>
<div class="im">> I believe it's related to the client device not being able to update the qtd struct which has been set at some Dma addresses, say 0x87xxxxxx. Is this possible?<br>
><br>
</div>are you referring to qtd_dma in qdt_struct?<br>
<div class="im">> The main issue is the register address for chip lies in 0x5a800000 range, so is the on-chip memory. If I set the qtd structs to on chip memory(internal sram), kernel paging error will occur.<br>
><br>
</div>If this register address range are actual hw addresses, then yes you<br>
will see kernel paging error, unless you have ioremapped them.<br>
<font color="#888888"><br>
-syed<br>
</font><div><div></div><div class="h5"><br>
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