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From: Arnd Bergmann <>
To: Lucas Stach <>
	Grant Likely <>,
	Rob Herring <>,
	Bjorn Helgaas <>,
	Magnus Damm <>,
	Geert Uytterhoeven <>,
	Ben Dooks <>,,
Subject: [PATCH v2] of/irq: provide int of_irq_parse_and_map_pci wrapper
Date: Fri, 09 May 2014 11:03:11 +0200	[thread overview]
Message-ID: <5744457.bgUFy9g0ST@wuerfel> (raw)
In-Reply-To: <>

The pci-rcar driver is enabled for compile tests, and this has
now shown that the driver cannot build without CONFIG_OF,
following the inclusion of f8f2fe7355fb "PCI: rcar: Use new OF
interrupt mapping when possible":

drivers/built-in.o: In function `rcar_pci_map_irq':
:(.text+0x1cc7c): undefined reference to `of_irq_parse_and_map_pci'

As pointed out by Ben Dooks and Geert Uytterhoeven, this is actually
supposed to build fine, which we can achieve if we make the
declaration of of_irq_parse_and_map_pci conditional on CONFIG_OF
and provide an empty inline function otherwise, as we do for
a lot of other of interfaces.

This lets us build the rcar_pci driver again without CONFIG_OF
for build testing. All platforms using this driver select OF,
so this doesn't change anything for the users.

Signed-off-by: Arnd Bergmann <>
Cc: Bjorn Helgaas <>
Cc: Magnus Damm <>
Cc: Geert Uytterhoeven <>
Cc: Ben Dooks <>
v2: clarified commit text.

diff --git a/include/linux/of_pci.h b/include/linux/of_pci.h
index 1a1f5ff..1e29bf4 100644
--- a/include/linux/of_pci.h
+++ b/include/linux/of_pci.h
@@ -7,13 +7,18 @@
 struct pci_dev;
 struct of_phandle_args;
 int of_irq_parse_pci(const struct pci_dev *pdev, struct of_phandle_args *out_irq);
-int of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin);
 struct device_node;
 struct device_node *of_pci_find_child_device(struct device_node *parent,
 					     unsigned int devfn);
 int of_pci_get_devfn(struct device_node *np);
 int of_pci_parse_bus_range(struct device_node *node, struct resource *res);
+#ifdef CONFIG_OF
+int of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin);
+static inline int
+of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin) { return 0; }
 #if defined(CONFIG_OF) && defined(CONFIG_PCI_MSI)
 int of_pci_msi_chip_add(struct msi_chip *chip);

  parent reply	other threads:[~2014-05-09  9:03 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-09  6:58 [PATCH] " Arnd Bergmann
2014-05-09  7:11 ` Geert Uytterhoeven
2014-05-09  8:28 ` Lucas Stach
2014-05-09  8:45   ` Arnd Bergmann
2014-05-09  8:54     ` Lucas Stach
2014-05-09  8:56     ` Geert Uytterhoeven
2014-05-09  9:03   ` Arnd Bergmann [this message]
2014-05-09  9:09     ` [PATCH v2] " Geert Uytterhoeven
2014-05-28  1:35       ` Jingoo Han

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