Re: Cabled PCIE device hotplug/hot-removal

On Thu, Jul 26, 2012 at 8:09 PM, Greg KH <[email protected]> wrote:
> On Thu, Jul 26, 2012 at 08:03:09PM +0300, Shlomo Pongratz wrote:
>> Hi,
>>
>> 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?

When the device is loaded the probe is called
When I "echo 1" to the remove sysfs entry the remove callback is called.
But when I power down the card no callback is called.
>
>> The pcisig presentation
>> "http://www.pcisig.com/developers/main/training_materials/get_document?doc_id=f4ca40ec1721aa7fadd05e2903b0172c36656294"
>> talks about PERST# detection for cabled PCIe hotplug.
>>
>> Does the kernel detect it?
>>
>> 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?

My {dot}config includes it into the kernel, i.e.
CONFIG_HOTPLUG_PCI_PCIE=y

>
> thanks,
>
> greg k-h

Thanks,