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authorThierry Reding <thierry.reding@avionic-design.de>2013-08-10 00:27:08 +0400
committerJason Cooper <jason@lakedaemon.net>2013-08-12 19:26:58 +0400
commit0cbdcfcf427b63b9670e56760ef5e67cd7081b35 (patch)
tree941122e2248ac4b8dd107bc1702c83cbc0961166 /drivers/pci/probe.c
parentebd97be635bff43239f391a49c78b98818c589fe (diff)
downloadlinux-0cbdcfcf427b63b9670e56760ef5e67cd7081b35.tar.xz
PCI: Introduce new MSI chip infrastructure
The new struct msi_chip is used to associated an MSI controller with a PCI bus. It is automatically handed down from the root to its children during bus enumeration. This patch provides default (weak) implementations for the architecture- specific MSI functions (arch_setup_msi_irq(), arch_teardown_msi_irq() and arch_msi_check_device()) which check if a PCI device's bus has an attached MSI chip and forward the call appropriately. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Tested-by: Daniel Price <daniel.price@gmail.com> Tested-by: Thierry Reding <thierry.reding@gmail.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Diffstat (limited to 'drivers/pci/probe.c')
-rw-r--r--drivers/pci/probe.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 46ada5c098eb..b8eaa8167849 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -666,6 +666,7 @@ static struct pci_bus *pci_alloc_child_bus(struct pci_bus *parent,
child->parent = parent;
child->ops = parent->ops;
+ child->msi = parent->msi;
child->sysdata = parent->sysdata;
child->bus_flags = parent->bus_flags;