diff mbox

[git,pull] PCI changes for 2.6.30

Message ID 20090402002412.GB28975@ldl.fc.hp.com (mailing list archive)
State Accepted, archived
Headers show

Commit Message

Alexander Chiang April 2, 2009, 12:24 a.m. UTC 
Hi Linus,

* Jesse Barnes <jbarnes@virtuousgeek.org>:
> On Wed, 1 Apr 2009 10:01:12 -0700 (PDT)
> Linus Torvalds <torvalds@linux-foundation.org> wrote:
> > On Tue, 31 Mar 2009, Jesse Barnes wrote:
> > >
> > > Please consider pulling my PCI tree from
> > >   git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
> > > linux-next
> > 
> > This produces
> > 
> >   WARNING: drivers/built-in.o(.text+0x69a1): Section mismatch in
> > reference from the function dev_rescan_store() to the
> > function .devinit.text:pci_rescan_bus() The function
> > dev_rescan_store() references the function __devinit
> > pci_rescan_bus(). This is often because dev_rescan_store lacks a
> > __devinit annotation or the annotation of pci_rescan_bus is wrong.
> > 
> > Hmm?
> 
> Arg how did I miss that?  Maybe the last build I did was missing
> hotplug support or something... Anyway looking now (at first glance I
> think pci_rescan_bus needs to drop __devinit).

This patch eliminates the warning in what I think is the correct
manner.

Thanks.

/ac

From: Alex Chiang <achiang@hp.com>

PCI: annotate pci_rescan_bus as __ref, not __devinit

pci_rescan_bus was annotated as __devinit, which is wrong,
because it will never be part of device initialization.
Howevever, we can't simply drop the annotation, because then we
get section warnings about calling pci_scan_child_bus (which is
correctly marked as __devinit).

pci_rescan_bus will only get built when CONFIG_HOTPLUG is set,
meaning that __devinit is a nop, so we know that pci_scan_child_bus
has not been freed.

Annotate as __ref to silence modpost.

Signed-off-by: Alex Chiang <achiang@hp.com>
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Comments

Jesse Barnes April 6, 2009, 6:46 p.m. UTC | #1 
On Wed, 1 Apr 2009 18:24:12 -0600
Alex Chiang <achiang@hp.com> wrote:

> PCI: annotate pci_rescan_bus as __ref, not __devinit

Applied, thanks.
diff mbox

Patch

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index e2f3dd0..8eb50df 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1220,7 +1220,7 @@  EXPORT_SYMBOL(pci_scan_bus_parented);
  *
  * Returns the max number of subordinate bus discovered.
  */
-unsigned int __devinit pci_rescan_bus(struct pci_bus *bus)
+unsigned int __ref pci_rescan_bus(struct pci_bus *bus)
 {
 	unsigned int max;
 	struct pci_dev *dev;