gpio: build fixes

This fixes various gpio-related build errors (mostly potential)
reported in part by Russell King and Uwe Kleine-König.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 8 insertions, 1 deletions

diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index ecf675a59d21..6be061d09da9 100644
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -1,8 +1,12 @@
 #ifndef _ASM_GENERIC_GPIO_H
 #define _ASM_GENERIC_GPIO_H
 
+#include <linux/types.h>
+
 #ifdef CONFIG_HAVE_GPIO_LIB
 
+#include <linux/compiler.h>
+
 /* Platforms may implement their GPIO interface with library code,
  * at a small performance cost for non-inlined operations and some
  * extra memory (for code and for per-GPIO table entries).
@@ -74,7 +78,7 @@ struct gpio_chip {
 
 extern const char *gpiochip_is_requested(struct gpio_chip *chip,
                         unsigned offset);
-extern int __init __must_check gpiochip_reserve(int start, int ngpio);
+extern int __must_check gpiochip_reserve(int start, int ngpio);
 
 /* add/remove chips */
 extern int gpiochip_add(struct gpio_chip *chip);
diff --git a/include/linux/gpio.h b/include/linux/gpio.h
index 4987a84078ef..98be6c5762b9 100644
--- a/include/linux/gpio.h
+++ b/include/linux/gpio.h
@@ -8,6 +8,9 @@
 
 #else
 
+#include <linux/types.h>
+#include <linux/errno.h>
+
 /*
  * Some platforms don't support the GPIO programming interface.
  *