On Fri, May 15, 2015 at 12:00:08AM +0100, Laurent Pinchart wrote:
> The function isn't trivial, document its behaviour.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart+rene...@ideasonboard.com>
> ---
> drivers/iommu/of_iommu.c | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
Thanks for doing this.
Acked-by: Will Deacon <will.dea...@arm.com>
Will
> diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c
> index 43429ab62228..b922ed4f9fb3 100644
> --- a/drivers/iommu/of_iommu.c
> +++ b/drivers/iommu/of_iommu.c
> @@ -133,6 +133,19 @@ struct iommu_ops *of_iommu_get_ops(struct device_node
> *np)
> return ops;
> }
>
> +/**
> + * of_iommu_configure - Configure and return the IOMMU for a device
> + * @dev: device for which to configure the IOMMU
> + * @master_np: device node of the bus master connected to the IOMMU
> + *
> + * The master_np parameter specifies the device node of the bus master seen
> by
> + * the IOMMU. This is usually the device node of the dev device, but can be
> the
> + * device node of a bridge when the device is dynamically discovered and
> + * instantiated and thus has no device node (such as PCI devices for
> instance).
> + *
> + * Return a pointer to the iommu_ops for the device, NULL if the device isn't
> + * connected to an IOMMU, or a negative value if an error occurs.
> + */
> struct iommu_ops *of_iommu_configure(struct device *dev,
> struct device_node *master_np)
> {
> --
> 2.3.6
>
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