[RFC] PCI: pcie-designware: allow drivers as loadable modules

[Lucas Stach]

Am Donnerstag, den 24.07.2014, 11:17 +0200 schrieb Arnd Bergmann:
> From 0ee79c7451851a34e5a7c33eb6020befcdcb2b24 Mon Sep 17 00:00:00 2001
> From: Arnd Bergmann <arnd at arndb.de>
> Date: Thu, 24 Jul 2014 11:12:48 +0200
> Subject: [PATCH] PCI: pcie-designware: allow drivers as loadable modules
> 
> The new pcie-spear13xx driver uses the pcie-designware library
> and in the current form it can be built as a loadable module.
> However, the functions it uses from the base driver are not exported,
> so this results in a build failure and a module that can never
> be loaded:
> 
> ERROR: "dw_pcie_host_init" [drivers/pci/host/pcie-spear13xx.ko] undefined!
> ERROR: "dw_handle_msi_irq" [drivers/pci/host/pcie-spear13xx.ko] undefined!
> ERROR: "dw_pcie_msi_init" [drivers/pci/host/pcie-spear13xx.ko] undefined!
> ERROR: "dw_pcie_cfg_write" [drivers/pci/host/pcie-spear13xx.ko] undefined!
> ERROR: "dw_pcie_cfg_read" [drivers/pci/host/pcie-spear13xx.ko] undefined!
> ERROR: "dw_pcie_setup_rc" [drivers/pci/host/pcie-spear13xx.ko] undefined!
> ERROR: "dw_pcie_link_up" [drivers/pci/host/pcie-spear13xx.ko] undefined!
> 
> If we want to allow loadable pcie-designware drivers, we have to
> export all those symbols and ensure none of them are marked as __init.
> This also requires making pci_assign_unassigned_resources available
> after boot.

My series "PCI: designware: init order/resource alloc fixes" removes
this function call from pcie-designware, so if it get's accepted this
should not be necessary.

Regards,
Lucas
-- 
Pengutronix e.K.             | Lucas Stach                 |
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