linux-kernel - [PATCH v4 07/19] PCI/MSI: Let pci_msi_get_domain use struct device's msi

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Date:	Wed, 15 Jul 2015 13:16:41 +0100
From:	Marc Zyngier <marc.zyngier@....com>
To:	Bjorn Helgaas <bhelgaas@...gle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Jiang Liu <jiang.liu@...ux.intel.com>,
	Jason Cooper <jason@...edaemon.net>
Cc:	<linux-arm-kernel@...ts.infradead.org>,
	<linux-pci@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	Yijing Wang <wangyijing@...wei.com>,
	Ma Jun <majun258@...wei.com>,
	Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
	Duc Dang <dhdang@....com>
Subject: [PATCH v4 07/19] PCI/MSI: Let pci_msi_get_domain use struct device's msi_domain

Now that we can easily find which MSI domain a PCI device is
using, use dev_get_msi_domain as a way to retrieve the information.

The original code is still used as a fallback.

Signed-off-by: Marc Zyngier <marc.zyngier@....com>
---
 drivers/pci/msi.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index ef4ec6e..c77fdaf 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -41,7 +41,8 @@ static struct irq_domain *pci_msi_get_domain(struct pci_dev *dev)
 {
 	struct irq_domain *domain = NULL;
 
-	if (dev->bus->msi)
+	domain = dev_get_msi_domain(&dev->dev);
+	if (!domain && dev->bus->msi)
 		domain = dev->bus->msi->domain;
 	if (!domain)
 		domain = arch_get_pci_msi_domain(dev);
-- 
2.1.4

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