Commit-ID: d8a1cb7575502d2be502a65ecb344ff05c8d9f44
Gitweb: http://git.kernel.org/tip/d8a1cb7575502d2be502a65ecb344ff05c8d9f44
Author: Marc Zyngier <marc.zyngier@xxxxxxx>
AuthorDate: Tue, 28 Jul 2015 14:46:14 +0100
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Thu, 30 Jul 2015 00:14:37 +0200
PCI/MSI: Let pci_msi_get_domain use struct device::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.
Acked-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Reviewed-by: Hanjun Guo <hanjun.guo@xxxxxxxxxx>
Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
Cc: <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx>
Cc: Yijing Wang <wangyijing@xxxxxxxxxx>
Cc: Ma Jun <majun258@xxxxxxxxxx>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
Cc: Duc Dang <dhdang@xxxxxxx>
Cc: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
Cc: Jason Cooper <jason@xxxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1438091186-10244-8-git-send-email-marc.zyngier@xxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
drivers/pci/msi.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 3aae7c9..4603344 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -39,14 +39,16 @@ struct irq_domain * __weak arch_get_pci_msi_domain(struct pci_dev *dev)
static struct irq_domain *pci_msi_get_domain(struct pci_dev *dev)
{
- struct irq_domain *domain = NULL;
+ struct irq_domain *domain;
- if (dev->bus->msi)
- domain = dev->bus->msi->domain;
- if (!domain)
- domain = arch_get_pci_msi_domain(dev);
+ domain = dev_get_msi_domain(&dev->dev);
+ if (domain)
+ return domain;
- return domain;
+ if (dev->bus->msi && (domain = dev->bus->msi->domain))
+ return domain;
+
+ return arch_get_pci_msi_domain(dev);
}
static int pci_msi_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
--
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