From mboxrd@z Thu Jan  1 00:00:00 1970
From: Greg KH <greg@kroah.com>
Date: Thu, 26 Jul 2012 17:09:25 +0000
Subject: Re: Cabled PCIE device hotplug/hot-removal
Message-Id: <20120726170925.GA24751@kroah.com>
List-Id: <linux-hotplug.vger.kernel.org>
References: <CAHzK-V0XpkVJHgqWiWpYP1jx5DPX=voE0eymK+5FG-zhrJOwAQ@mail.gmail.com>
In-Reply-To: <CAHzK-V0XpkVJHgqWiWpYP1jx5DPX=voE0eymK+5FG-zhrJOwAQ@mail.gmail.com>
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To: Shlomo Pongratz <shlomopongratz@gmail.com>
Cc: linux-pci@vger.kernel.org, linux-hotplug@vger.kernel.org

On Thu, Jul 26, 2012 at 08:03:09PM +0300, Shlomo Pongratz wrote:
> Hi,
>=20
> I have a  PCIe device connected with cables to a host (kernel 3.5.0-rc7+).
> What are the handler I need to add to a driver in order to catch cable
> pull-out / push-in?

You shouldn't need anything special, aren't you already getting probe
and disconnect callbacks when the device is discovered and removed?

> The pcisig presentation
> "http://www.pcisig.com/developers/main/training_materials/get_document?do=
c_id=F4ca40ec1721aa7fadd05e2903b0172c36656294"
> talks about PERST# detection for cabled PCIe hotplug.
>=20
> Does the kernel detect it?
>=20
> None of the pci_driver or pci_error_handlers callbacks were called
> when using powered down/up the device (electrically).

Do you have the pciehp driver loaded properly when this happens?

thanks,

greg k-h