On Sat, Feb 02, 2008 at 09:01:10PM +0100, Bartlomiej Zolnierkiewicz wrote:
> On Saturday 02 February 2008, Jeff Garzik wrote:
> > Linux Kernel Mailing List wrote:
> > > Commit: 0948391641918b95d8d96c15089eb5ac156850b3
> >
> > > PCI: Remove users of pci_enable_device_bars()
> > >
> > > This patch converts users of pci_enable_device_bars() to the new
> > > pci_enable_device_{io,mem} interface.
> > >
> > > The new API fits nicely, except maybe for the QLA case where a bit of
> > > code re-organization might be a good idea but I prefer sticking to the
> > > simple patch as I don't have hardware to test on.
> > >
> > > I'll also need some feedback on the cs5520 change.
> > >
> > > Signed-off-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
> > > Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
> >
> > > --- a/drivers/ata/pata_cs5520.c
> > > +++ b/drivers/ata/pata_cs5520.c
> > > @@ -229,7 +229,7 @@ static int __devinit cs5520_init_one(struct pci_dev *pdev, const struct pci_devi
> > > return -ENOMEM;
> > >
> > > /* Perform set up for DMA */
> > > - if (pci_enable_device_bars(pdev, 1<<2)) {
> > > + if (pci_enable_device_io(pdev)) {
> > > printk(KERN_ERR DRV_NAME ": unable to configure BAR2.\n");
> > > return -ENODEV;
> > > }
> > > diff --git a/drivers/ide/pci/cs5520.c b/drivers/ide/pci/cs5520.c
> > > index 6ec00b8..10adc49 100644
> > > --- a/drivers/ide/pci/cs5520.c
> > > +++ b/drivers/ide/pci/cs5520.c
> > > @@ -156,8 +156,14 @@ static int __devinit cs5520_init_one(struct pci_dev *dev, const struct pci_devic
> > > ide_setup_pci_noise(dev, d);
> > >
> > > /* We must not grab the entire device, it has 'ISA' space in its
> > > - BARS too and we will freak out other bits of the kernel */
> > > - if (pci_enable_device_bars(dev, 1<<2)) {
> > > + * BARS too and we will freak out other bits of the kernel
> > > + *
> > > + * pci_enable_device_bars() is going away. I replaced it with
> > > + * IO only enable for now but I'll need confirmation this is
> > > + * allright for that device. If not, it will need some kind of
> > > + * quirk. --BenH.
> > > + */
> > > + if (pci_enable_device_io(dev)) {
> > > printk(KERN_WARNING "%s: Unable to enable 55x0.\n", d->name);
> > > return -ENODEV;
> > > }
> >
> > So... did the feedback mentioned in the commit log ever appear? :)
>
> Since Alan has commented on it:
>
> http://lkml.org/lkml/2007/12/17/422
>
> "5520 in fact is always enabled as it is the host bridge.
> pci_enable_device_io will do just fine. The 5520 fun is if you disable it
> the system hangs."
>
> I moved on assuming that either submitter or integrator would follow up...
> but it seems that it didn't happen. :(
>
> PS Could somebody remove the stale comment from cs5520.c?
Ben, care to send me a patch for this, as it's your change?
thanks,
greg k-h
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