From: bhslinker@gmail.com (Bharath H S)
To: kernelnewbies@lists.kernelnewbies.org
Subject: Need help EHCI host driver on Linux 2.6.29
Date: Wed, 22 Dec 2010 21:36:07 +0530 [thread overview]
Message-ID: <AANLkTi=_zCzQtgL82kbUXtKUVTRxu8yA8rfGY2cXRy0X@mail.gmail.com> (raw)
In-Reply-To: <AANLkTimAKEccwkHZm3bkMQQ3edH760UW2t1ufKhia3H9@mail.gmail.com>
Hi CL Lee,
I agree with Greg. The bug what you have encountered may have been fixed in
latest kernels .36 or .37-rc.
>> 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.
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.
*- Bharath H S*
On Wed, Dec 22, 2010 at 10:46 AM, Syed Khader <sk.syed2@gmail.com> wrote:
> On Tue, Dec 21, 2010 at 5:18 PM, CL Lee <pelangi15@gmail.com> wrote:
> > Dear Experts,
> >
> > 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.
> >
> Which SoC? what arch? What is the error message you see?
> > 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?
> >
> are you referring to qtd_dma in qdt_struct?
> > 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.
> >
> If this register address range are actual hw addresses, then yes you
> will see kernel paging error, unless you have ioremapped them.
>
> -syed
>
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> Kernelnewbies mailing list
> Kernelnewbies at kernelnewbies.org
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prev parent reply other threads:[~2010-12-22 16:06 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-21 23:18 Need help EHCI host driver on Linux 2.6.29 CL Lee
2010-12-22 4:38 ` Greg KH
2010-12-22 5:16 ` Syed Khader
2010-12-22 16:06 ` Bharath H S [this message]
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