linux-kernel - Re: [git pull] PCI changes (link error)

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Date:	Fri, 14 Jan 2011 23:13:00 +0100
From:	Markus Trippelsdorf <markus@...ppelsdorf.de>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [git pull] PCI changes (link error)

On 2011.01.14 at 23:01 +0100, Rafael J. Wysocki wrote:
> On Friday, January 14, 2011, Markus Trippelsdorf wrote:
> > On 2011.01.14 at 09:01 -0800, Jesse Barnes wrote:
> > > ...
> > > 
> > > Rafael J. Wysocki (5):
> > >       PCI hotplug: Fix unexpected driver unregister in pciehp_acpi.c
> > >       PCI/PCIe: Clear Root PME Status bits early during system resume
> > >       PCI/ACPI: Request _OSC control once for each root bridge (v3)
> > 
> > This breaks the build if CONFIG_PCIEPORTBUS is not set:
> > 
> > ld: drivers/built-in.o: in function acpi_pci_root_add:pci_root.c(.devinit.text+0x2633): error: undefined reference to 'pcie_ports_disabled'
> 
> Does the appended patch help?

> +#ifdef CONFIG_PCIEPORTBUS
>  extern bool pcie_ports_disabled;
>  extern bool pcie_ports_auto;
> +#else
> +#define pcie_ports_disabled	true
> +#define bool pcie_ports_auto	false
> +#endif

No, but this one does ;-):


diff --git a/include/linux/pci.h b/include/linux/pci.h
index 9e67dcd..0f4ca55 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -993,8 +993,13 @@ extern void pci_restore_msi_state(struct pci_dev *dev);
 extern int pci_msi_enabled(void);
 #endif
 
+#ifdef CONFIG_PCIEPORTBUS
 extern bool pcie_ports_disabled;
 extern bool pcie_ports_auto;
+#else
+#define pcie_ports_disabled true
+#define pcie_ports_auto false
+#endif
 
 #ifndef CONFIG_PCIEASPM
 static inline int pcie_aspm_enabled(void)

-- 
Markus
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