[PATCH 1/2] au1000: fix build failure for db1x00 configured for Au1100 SoC

[Florian Fainelli <florian@openwrt.org>]

Hi Ralf,

This patch should apply to both -master and -queue. Thanks !
--
From: Florian Fainelli <florian@openwrt.org>
Subject: [PATCH 1/2] au1000: fix build failure for db1x00 configured for Au1100 SoC

This patch fixes the following warning, which becomes an error due to
-Werror to be turned on:
  CC      arch/mips/alchemy/common/gpiolib-au1000.o
cc1: warnings being treated as errors
arch/mips/alchemy/common/gpiolib-au1000.c: In function 'au1100_gpio2_to_irq':
/home/florian/dev/kernel/linux-queue/arch/mips/include/asm/mach-au1x00/gpio-au1000.h:107: warning: control reaches end of non-void function
 
Signed-off-by: Florian Fainelli <florian@openwrt.org>
---
diff --git a/arch/mips/include/asm/mach-au1x00/gpio-au1000.h b/arch/mips/include/asm/mach-au1x00/gpio-au1000.h
index 127d4ed..4d54d40 100644
--- a/arch/mips/include/asm/mach-au1x00/gpio-au1000.h
+++ b/arch/mips/include/asm/mach-au1x00/gpio-au1000.h
@@ -104,6 +104,8 @@ static inline int au1100_gpio2_to_irq(int gpio)
 
 	if ((gpio >= 8) && (gpio <= 15))
 		return MAKE_IRQ(0, 29);		/* shared GPIO208_215 */
+
+	return -ENXIO;
 }
 
 #ifdef CONFIG_SOC_AU1100