Re: [PATCH] pci: x86-32/64 switch to pci_get API

From: Muli Ben-Yehuda
Date: Mon Oct 16 2006 - 13:26:42 EST


On Mon, Oct 16, 2006 at 06:07:59PM +0200, Andi Kleen wrote:
> > --- linux.vanilla-2.6.19-rc1-mm1/arch/x86_64/kernel/pci-calgary.c 2006-10-13 15:10:06.000000000 +0100
> > +++ linux-2.6.19-rc1-mm1/arch/x86_64/kernel/pci-calgary.c 2006-10-13 17:14:40.000000000 +0100
> > @@ -879,7 +879,7 @@
> >
> > error:
> > do {
> > - dev = pci_find_device_reverse(PCI_VENDOR_ID_IBM,
> > + dev = pci_get_device_reverse(PCI_VENDOR_ID_IBM,
> > PCI_DEVICE_ID_IBM_CALGARY,
> > dev);
>
> No put call anywhere?

The put is implicit in the call, since for each dev returned from
pci_get_device_reverse() we then call it with the same dev as the last
('from') parameter. We take a reference to dev elsewhere, just before
we start using it.

In any case these bridges can't be hot-plugged, so as long as the ref
count remains positive, we're fine.

Cheers,
Muli
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