[PATCH 06/16] Mips/MSI: Save MSI controller in pci sysdata

[Yijing Wang <wangyijing@huawei.com>]

Save MSI controller in pci sysdata, add arch pcibios_msi_controller()
to extract out MSI controller.

Signed-off-by: Yijing Wang <wangyijing@huawei.com>
---
 arch/mips/include/asm/pci.h |    3 +++
 arch/mips/pci/pci.c         |    9 +++++++++
 2 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/arch/mips/include/asm/pci.h b/arch/mips/include/asm/pci.h
index 974b0e3..d7cd850 100644
--- a/arch/mips/include/asm/pci.h
+++ b/arch/mips/include/asm/pci.h
@@ -43,6 +43,9 @@ struct pci_controller {
 
 	int iommu;
 
+#ifdef CONFIG_PCI_MSI
+	struct msi_controller *msi_ctrl;
+#endif
 	/* Optional access methods for reading/writing the bus number
 	   of the PCI controller */
 	int (*get_busno)(void);
diff --git a/arch/mips/pci/pci.c b/arch/mips/pci/pci.c
index 1bf60b1..7917cba 100644
--- a/arch/mips/pci/pci.c
+++ b/arch/mips/pci/pci.c
@@ -36,6 +36,15 @@ unsigned long PCIBIOS_MIN_MEM;
 
 static int pci_initialized;
 
+#ifdef CONFIG_PCI_MSI
+struct msi_controller *pcibios_msi_controller(struct pci_bus *bus)
+{
+	struct pci_controller *ctrl = bus->sysdata;
+
+	return ctrl->msi_ctrl;
+}
+#endif
+
 /*
  * We need to avoid collisions with `mirrored' VGA ports
  * and other strange ISA hardware, so we always want the
-- 
1.7.1