Re: [PATCH v10 5/7] PCI: irqdomain: Look up IRQ domain by fwnode_handle

[Marc Zyngier]

On 10/12/15 17:53, ja...@microsoft.com wrote:
> From: Jake Oshins 
> 
> This patch adds a second way of finding an IRQ domain associated with
> a root PCI bus.  After looking to see if one can be found through
> the OF tree, it attempts to look up the IRQ domain through an
> fwnode_handle stored in the pci_sysdata struct.
> 
> Signed-off-by: Jake Oshins 
> ---
>  drivers/pci/probe.c | 14 ++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
> index 750f907..c6369dd 100644
> --- a/drivers/pci/probe.c
> +++ b/drivers/pci/probe.c
> @@ -674,6 +674,20 @@ static struct irq_domain 
> *pci_host_bridge_msi_domain(struct pci_bus *bus)
>*/
>   d = pci_host_bridge_of_msi_domain(bus);
>  
> +#ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
> + /*
> +  * If no IRQ domain was found via the OF tree, try looking it up
> +  * directly through the fwnode_handle.
> +  */
> + if (!d) {
> + struct fwnode_handle *fwnode = pci_root_bus_fwnode(bus);
> +
> + if (fwnode)
> + d = irq_find_matching_fwnode(fwnode,
> +  DOMAIN_BUS_PCI_MSI);
> + }
> +#endif
> +
>   return d;
>  }
>  
> 

Reviewed-by: Marc Zyngier 

M.
-- 
Jazz is not dead. It just smells funny...
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[PATCH v10 5/7] PCI: irqdomain: Look up IRQ domain by fwnode_handle

[jakeo]

From: Jake Oshins 

This patch adds a second way of finding an IRQ domain associated with
a root PCI bus.  After looking to see if one can be found through
the OF tree, it attempts to look up the IRQ domain through an
fwnode_handle stored in the pci_sysdata struct.

Signed-off-by: Jake Oshins 
---
 drivers/pci/probe.c | 14 ++
 1 file changed, 14 insertions(+)

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 750f907..c6369dd 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -674,6 +674,20 @@ static struct irq_domain 
*pci_host_bridge_msi_domain(struct pci_bus *bus)
 */
d = pci_host_bridge_of_msi_domain(bus);
 
+#ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
+   /*
+* If no IRQ domain was found via the OF tree, try looking it up
+* directly through the fwnode_handle.
+*/
+   if (!d) {
+   struct fwnode_handle *fwnode = pci_root_bus_fwnode(bus);
+
+   if (fwnode)
+   d = irq_find_matching_fwnode(fwnode,
+DOMAIN_BUS_PCI_MSI);
+   }
+#endif
+
return d;
 }
 
-- 
1.9.1

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