linux-kernel - [PATCH 1/3] avr32: fix build failure

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Date:	Sat, 19 Sep 2015 22:42:57 +0530
From:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:	Haavard Skinnemoen <hskinnemoen@...il.com>,
	Hans-Christian Egtvedt <egtvedt@...fundet.no>,
	Felipe Balbi <balbi@...com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Sudip Mukherjee <sudipm.mukherjee@...il.com>
Subject: [PATCH 1/3] avr32: fix build failure

While building avr32 with allmodconfig, the build used to fail with the
message:
error: implicit declaration of function 'pci_iomap'
error: implicit declaration of function 'pci_iounmap'

Create dummy pci_io{map,unmap} functions to fix the build.

Signed-off-by: Sudip Mukherjee <sudip@...torindia.org>
---

Tested with defconfig, allmodconfig, allnoconfig and merisc_defconfig.
Build is at:
https://travis-ci.org/sudipm-mukherjee/parport/builds/81168845

Partial idea taken from:
78857614104a ("MIPS: Expose missing pci_io{map,unmap} declarations")
which solved a similar problem with mips.

 arch/avr32/include/asm/io.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/avr32/include/asm/io.h b/arch/avr32/include/asm/io.h
index f855646..1d8c4e4 100644
--- a/arch/avr32/include/asm/io.h
+++ b/arch/avr32/include/asm/io.h
@@ -276,6 +276,19 @@ extern void __iomem *__ioremap(unsigned long offset, size_t size,
 			       unsigned long flags);
 extern void __iounmap(void __iomem *addr);
 
+#ifndef CONFIG_PCI
+struct pci_dev;
+static inline void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
+{
+}
+
+static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar,
+				      unsigned long maxlen)
+{
+	return NULL;
+}
+#endif
+
 /*
  * ioremap	-   map bus memory into CPU space
  * @offset	bus address of the memory
-- 
1.9.1

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