[PATCH V7 06/17] powerpc/pci: Define pcibios_disable_device() on powerpc

[Wei Yang <weiyang@linux.vnet.ibm.com>]

When driver remove a pci_dev, it will call pcibios_disable_device() which is
platform dependent. This gives flexibility to platforms.

This patch defines this weak function on powerpc architecture.

Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
---
 arch/powerpc/include/asm/machdep.h |    5 ++++-
 arch/powerpc/kernel/pci-common.c   |    8 ++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/include/asm/machdep.h b/arch/powerpc/include/asm/machdep.h
index f92b0b5..3909d1b 100644
--- a/arch/powerpc/include/asm/machdep.h
+++ b/arch/powerpc/include/asm/machdep.h
@@ -238,7 +238,10 @@ struct machdep_calls {
 
 	/* Called when pci_enable_device() is called. Returns 0 to
 	 * allow assignment/enabling of the device. */
-	int  (*pcibios_enable_device_hook)(struct pci_dev *);
+	int (*pcibios_enable_device_hook)(struct pci_dev *);
+
+	/* Called when pci_disable_device() is called. */
+	void (*pcibios_disable_device_hook)(struct pci_dev *);
 
 	/* Called after scan and before resource survey */
 	void (*pcibios_fixup_phb)(struct pci_controller *hose);
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index ee70f57..d38a330 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -1457,6 +1457,14 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
 	return pci_enable_resources(dev, mask);
 }
 
+void pcibios_disable_device(struct pci_dev *dev)
+{
+	if (ppc_md.pcibios_disable_device_hook)
+		ppc_md.pcibios_disable_device_hook(dev);
+
+	return;
+}
+
 resource_size_t pcibios_io_space_offset(struct pci_controller *hose)
 {
 	return (unsigned long) hose->io_base_virt - _IO_BASE;
-- 
1.7.9.5