[patch 2.6.26-rc3] gpio: build fixes (mostly potential)

[David Brownell <david-b@pacbell.net>]

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

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
---
 include/asm-generic/gpio.h |    4 +++-
 include/linux/gpio.h       |    2 ++
 2 files changed, 5 insertions(+), 1 deletion(-)

--- a/include/asm-generic/gpio.h	2008-05-19 14:59:51.000000000 -0700
+++ b/include/asm-generic/gpio.h	2008-05-19 15:05:18.000000000 -0700
@@ -3,6 +3,8 @@
 
 #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 +76,7 @@ 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);
--- a/include/linux/gpio.h	2008-05-19 15:05:34.000000000 -0700
+++ b/include/linux/gpio.h	2008-05-19 15:06:54.000000000 -0700
@@ -8,6 +8,8 @@
 
 #else
 
+#include <linux/errno.h>
+
 /*
  * Some platforms don't support the GPIO programming interface.
  *