From: Ralf Baechle <ralf@linux-mips.org>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>, linux-mips@linux-mips.org
Subject: Re: [PATCH] IOC3: Switch to pci refcounting safe APIs
Date: Mon, 23 Apr 2007 15:35:07 +0100 [thread overview]
Message-ID: <20070423143507.GA8877@linux-mips.org> (raw)
In-Reply-To: <20070423151918.477ffb6a@the-village.bc.nu>
On Mon, Apr 23, 2007 at 03:19:18PM +0100, Alan Cox wrote:
> > > +static int ioc3_adjacent_is_ioc3(struct pci_dev *pdev, int dev)
> > > +{
> > > + struct pci_dev *dev = pci_get_bus_and_slot(pdev->bus->number,
> > > + PCI_DEVFN(dev, 0));
> >
> > The same question: isn't pci_get_bus() better in this case?
>
> Makes no real difference, but if you know the MIPS tree never ends up
> with pdev->bus = NULL for the root bus then its a trivial change
That's the case on MIPS.
> > I don't see the point of using refcounting API in such cases but well...
>
> Two reasons
>
> 1. It makes the entire system more consistent
> 2. It means we can remove the (usually) unsafe pci_find_slot API
>
> (and #3 sort of... it means the pci fake hotplug testing works with this
> device too)
The patch looks ok to me:
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Longer term MENET should be handled differently but this patch certainly
doesn't make things worse.
Ralf
next prev parent reply other threads:[~2007-04-23 14:35 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-23 14:06 [PATCH] IOC3: Switch to pci refcounting safe APIs Alan Cox
2007-04-23 14:09 ` Sergei Shtylyov
2007-04-23 14:19 ` Alan Cox
2007-04-23 14:21 ` Sergei Shtylyov
2007-04-23 14:35 ` Ralf Baechle [this message]
2007-04-23 15:18 ` Alan Cox
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