Hi Thierry,
On Mon, 28 Jul 2014 08:35:50 -0700
Thierry Reding <thierry.red...@gmail.com> wrote:
> On Mon, Jul 28, 2014 at 11:45:42AM +0800, Jisheng Zhang wrote:
> > We should call tegra_msi_free() to free the msi bit if
> > irq_create_mapping() fails. And we need to dispose the irq mapping
> > during irq teardown.
>
> "MSI" and "IRQ" please.
Done in the v3 patch. Thanks for your reviewing.
>
> > diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/host/pci-tegra.c
> > index 083cf37..4ccc418 100644
> > --- a/drivers/pci/host/pci-tegra.c
> > +++ b/drivers/pci/host/pci-tegra.c
> > @@ -1203,8 +1203,10 @@ static int tegra_msi_setup_irq(struct msi_chip
> > *chip, struct pci_dev *pdev, return hwirq;
> >
> > irq = irq_create_mapping(msi->domain, hwirq);
> > - if (!irq)
> > + if (!irq) {
> > + tegra_msi_free(msi, hwirq);
> > return -EINVAL;
> > + }
> >
> > irq_set_msi_desc(irq, desc);
> >
> > @@ -1222,8 +1224,10 @@ static void tegra_msi_teardown_irq(struct msi_chip
> > *chip, unsigned int irq) {
> > struct tegra_msi *msi = to_tegra_msi(chip);
> > struct irq_data *d = irq_get_irq_data(irq);
> > + unsigned long hwirq = d->hwirq;
>
> I don't think we need this temporary variable, d->hwirq isn't overly
> long.
irq_dispose_mapping() will clear d->hwirq as 0, so if we don't save to a
temporary
variable, we will always MSI 0, this is not what we want. What do you think?
>
> With both of the above address, this is:
>
> Reviewed-by: Thierry Reding <tred...@nvidia.com>
> Acked-by: Thierry Reding <tred...@nvidia.com>
Thanks for reviewing,
Jisheng
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
