Commit-ID:  d8a1cb7575502d2be502a65ecb344ff05c8d9f44
Gitweb:     http://git.kernel.org/tip/d8a1cb7575502d2be502a65ecb344ff05c8d9f44
Author:     Marc Zyngier <[email protected]>
AuthorDate: Tue, 28 Jul 2015 14:46:14 +0100
Committer:  Thomas Gleixner <[email protected]>
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 <[email protected]>
Reviewed-by: Hanjun Guo <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
Cc: <[email protected]>
Cc: Yijing Wang <[email protected]>
Cc: Ma Jun <[email protected]>
Cc: Lorenzo Pieralisi <[email protected]>
Cc: Duc Dang <[email protected]>
Cc: Jiang Liu <[email protected]>
Cc: Jason Cooper <[email protected]>
Link: 
http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
---
 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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