linux-kernel - Re: bug report about acpiphp

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Message-ID: <CAE9FiQViu-Y_uvbGL=00KH1_iv4oCvvY-id5Q52UiPjQhg0=Bw@mail.gmail.com>
Date:	Sat, 15 Jun 2013 11:40:07 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	diego fanesi <diego.fanesi@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: bug report about acpiphp

On Sat, Jun 15, 2013 at 8:34 AM, diego fanesi <diego.fanesi@...il.com> wrote:
> I would like to report a bug about the module acpiphp. I don't know if
> this is the right place, if it isn't please tell me where I should
> write and I will do it.
>
> description: docking station hotplug working on 3.5.0 kernel but not
> in previous and next kernel releases
> hardware: sony vaio serie z SVZ1311C5E + Docking station VGP-PRZ20A
> distro: Ubuntu precise, kernels compiled from the source in kernel.org
>
> The problem is about connecting the docking station after the boot.
> with kernel 3.5.0:
> when I connect the docking station I can see the following log lines (dmesg):
> [ 2442.046921] acpiphp: Slot [1-1] registered
> [ 2442.046945] acpiphp: Slot [2] registered
> [ 2442.046968] acpiphp: Slot [3] registered
> [ 2442.047056] acpiphp: Slot [1-2] registered
> [ 2442.047066] acpiphp_glue: sibling found, but _SUN doesn't match!
> [ 2442.047169] acpiphp: Slot [1-3] registered
> [ 2442.047229] acpiphp: Slot [1-4] registered
> [ 2442.047300] acpiphp: Slot [1-5] registered
>
> after that all the devices are available in the system. I can use the
> external network, the bluray device, and the usb ports available in
> the docking station.
> if I unload the acpiphp module the hotplug doesn't work, meaning no
> log lines and devices not usable.
>
> with any other kernel (I tried also with 3.10rc5):
> when I connect the docking station I cannot see the log lines
> specified above, and the devices are not available. I tried with and
> without acpiphp loaded.
>
> I didn't tried with other 3.5 kernel versions. I tried with 3.7 and
> 3.8 and it is not working
>
> If I connect the docking station before the boot with a non 3.5.0
> kernel and I unplug it I can continue to see the devices available but
> of course not working.

please check v3.10-rc5 +
https://patchwork.kernel.org/patch/2723671/
https://patchwork.kernel.org/patch/2723721/
https://patchwork.kernel.org/patch/2723751/
https://patchwork.kernel.org/patch/2723791/
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