[PATCH v8 12/15] msi: platform: make platform_msi_create_device_domain() ACPI aware

[Hanjun Guo]

From: Hanjun Guo <hanjun.guo@xxxxxxxxxx>

The irqdomain creation is carried out in:

platform_msi_create_device_domain()

relies on the fwnode_handle interrupt controller token to associate the
interrupt controller with a specific irqdomain. Current code relies on
the OF layer to retrieve a fwnode_handle for the device representing the
interrupt controller from its device->of_node pointer.  This makes
platform_msi_create_device_domain() DT specific whilst it really is not
because after the merge of commit f94277af03ea ("of/platform: Initialise
dev->fwnode appropriately") the fwnode_handle can easily be retrieved
from the dev->fwnode pointer in a firmware agnostic way.

Update platform_msi_create_device_domain() to retrieve the interrupt
controller fwnode_handle from the dev->fwnode pointer so that it can
be used seamlessly in ACPI and DT systems.

Signed-off-by: Hanjun Guo <hanjun.guo@xxxxxxxxxx>
Reviewed-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
Tested-by: Ming Lei <ming.lei@xxxxxxxxxxxxx>
Tested-by: Wei Xu <xuwei5@xxxxxxxxxxxxx>
Cc: Marc Zyngier <marc.zyngier@xxxxxxx>
Cc: Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/base/platform-msi.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/base/platform-msi.c b/drivers/base/platform-msi.c
index be6a599..035ca3b 100644
--- a/drivers/base/platform-msi.c
+++ b/drivers/base/platform-msi.c
@@ -345,8 +345,7 @@ struct irq_domain *
 
 	data->host_data = host_data;
 	domain = irq_domain_create_hierarchy(dev->msi_domain, 0, nvec,
-					     of_node_to_fwnode(dev->of_node),
-					     ops, data);
+					     dev->fwnode, ops, data);
 	if (!domain)
 		goto free_priv;
 
-- 
1.7.12.4