linux-kernel - [PATCH v9 12/15] msi: platform: make platform_msi_create_device

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Date:   Tue, 7 Mar 2017 20:40:07 +0800
From:   Hanjun Guo <guohanjun@...wei.com>
To:     Marc Zyngier <marc.zyngier@....com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>
CC:     <linux-acpi@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Greg KH <gregkh@...uxfoundation.org>,
        Tomasz Nowicki <tn@...ihalf.com>, Ma Jun <majun258@...wei.com>,
        Kefeng Wang <wangkefeng.wang@...wei.com>,
        Sinan Kaya <okaya@...eaurora.org>, <huxinwei@...wei.com>,
        <yimin@...wei.com>, <linuxarm@...wei.com>,
        Hanjun Guo <hanjun.guo@...aro.org>
Subject: [PATCH v9 12/15] msi: platform: make platform_msi_create_device_domain() ACPI aware

From: Hanjun Guo <hanjun.guo@...aro.org>

The irqdomain creation that 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@...aro.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Tested-by: Ming Lei <ming.lei@...onical.com>
Tested-by: Wei Xu <xuwei5@...ilicon.com>
Cc: Marc Zyngier <marc.zyngier@....com>
Cc: Greg KH <gregkh@...uxfoundation.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
---
 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 0fc7c4d..d35e9a2 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