linux-kernel - [PATCH 1/5] powerpc/pci: Hide pci_device_from_OF

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Date:   Wed,  6 Jul 2022 12:43:04 +0200
From:   Pali Rohár <pali@...nel.org>
To:     Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Cédric Le Goater <clg@...d.org>,
        Nick Child <nick.child@....com>,
        Bjorn Helgaas <helgaas@...nel.org>
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/5] powerpc/pci: Hide pci_device_from_OF_node() for non-powermac code

Function pci_device_from_OF_node() is used only in powermac code.
So hide it from all other platforms as it is unsed.

Signed-off-by: Pali Rohár <pali@...nel.org>
---
 arch/powerpc/include/asm/pci-bridge.h | 2 ++
 arch/powerpc/kernel/pci_32.c          | 2 ++
 arch/powerpc/kernel/pci_64.c          | 2 ++
 3 files changed, 6 insertions(+)

diff --git a/arch/powerpc/include/asm/pci-bridge.h b/arch/powerpc/include/asm/pci-bridge.h
index c85f901227c9..98156932a1f5 100644
--- a/arch/powerpc/include/asm/pci-bridge.h
+++ b/arch/powerpc/include/asm/pci-bridge.h
@@ -170,8 +170,10 @@ static inline struct pci_controller *pci_bus_to_host(const struct pci_bus *bus)
 	return bus->sysdata;
 }
 
+#ifdef CONFIG_PPC_PMAC
 extern int pci_device_from_OF_node(struct device_node *node,
 				   u8 *bus, u8 *devfn);
+#endif
 #ifndef CONFIG_PPC64
 
 extern void pci_create_OF_bus_map(void);
diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c
index 5a174936c9a0..c3b91fb62a71 100644
--- a/arch/powerpc/kernel/pci_32.c
+++ b/arch/powerpc/kernel/pci_32.c
@@ -154,6 +154,7 @@ pcibios_make_OF_bus_map(void)
 }
 
 
+#ifdef CONFIG_PPC_PMAC
 /*
  * Returns the PCI device matching a given OF node
  */
@@ -193,6 +194,7 @@ int pci_device_from_OF_node(struct device_node *node, u8 *bus, u8 *devfn)
 	return -ENODEV;
 }
 EXPORT_SYMBOL(pci_device_from_OF_node);
+#endif
 
 /* We create the "pci-OF-bus-map" property now so it appears in the
  * /proc device tree
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 19b03ddf5631..0c7cfb9fab04 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -286,6 +286,7 @@ int pcibus_to_node(struct pci_bus *bus)
 EXPORT_SYMBOL(pcibus_to_node);
 #endif
 
+#ifdef CONFIG_PPC_PMAC
 int pci_device_from_OF_node(struct device_node *np, u8 *bus, u8 *devfn)
 {
 	if (!PCI_DN(np))
@@ -294,3 +295,4 @@ int pci_device_from_OF_node(struct device_node *np, u8 *bus, u8 *devfn)
 	*devfn = PCI_DN(np)->devfn;
 	return 0;
 }
+#endif
-- 
2.20.1