[PATCH 6/9] PCI: hotplug: Constify hotplug_slot_ops

[Tyrel Datwyler]

On 08/19/2018 07:29 AM, Lukas Wunner wrote:
> Hotplug drivers cannot declare their hotplug_slot_ops const, making them
> attractive targets for attackers, because upon registration of a hotplug
> slot, __pci_hp_initialize() writes to the "owner" and "mod_name" members
> in that struct.
> 
> Fix by moving these members to struct hotplug_slot and constify every
> driver's hotplug_slot_ops except for pciehp.
> 
> pciehp constructs its hotplug_slot_ops at runtime based on the PCIe
> port's capabilities, hence cannot declare them const.  It can be
> converted to __write_rarely once that's mainlined:
> http://www.openwall.com/lists/kernel-hardening/2016/11/16/3
> 
> Signed-off-by: Lukas Wunner <lukas at wunner.de>
> Cc: Rafael J. Wysocki <rjw at rjwysocki.net>
> Cc: Len Brown <lenb at kernel.org>
> Cc: Scott Murray <scott at spiteful.org>
> Cc: Benjamin Herrenschmidt <benh at kernel.crashing.org>
> Cc: Paul Mackerras <paulus at samba.org>
> Cc: Michael Ellerman <mpe at ellerman.id.au>
> Cc: Gavin Shan <gwshan at linux.vnet.ibm.com>
> Cc: Sebastian Ott <sebott at linux.vnet.ibm.com>
> Cc: Gerald Schaefer <gerald.schaefer at de.ibm.com>
> Cc: Corentin Chary <corentin.chary at gmail.com>
> Cc: Darren Hart <dvhart at infradead.org>
> Cc: Andy Shevchenko <andy at infradead.org>
> ---

With regards to drivers/pci/hotplug/rpa*

Acked-by: Tyrel Datwyler <tyreld at linux.vnet.ibm.com>