[PATCH] gpio_free might sleep, x86 architecture

[Uwe Kleine-KÃnig]

According to the documentation gpio_free should only be called from task
context only.  To make this more explicit add a might sleep to all
implementations.

This patch changes the gpio_free implementations for the x86
architecture.

Signed-off-by: Uwe Kleine-KÃnig <ukleinek@xxxxxxxxxxxxxxxxxxxxxxxxxx>
Cc: David Brownell <david-b@xxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: H. Peter Anvin <hpa@xxxxxxxxx>
Cc: Guennadi Liakhovetski <g.liakhovetski@xxxxxxxxxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Cc: Kay Sievers <kay.sievers@xxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx>
---
 include/asm-x86/mach-rdc321x/gpio.h |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/include/asm-x86/mach-rdc321x/gpio.h b/include/asm-x86/mach-rdc321x/gpio.h
index acce0b7..3639ece 100644
--- a/include/asm-x86/mach-rdc321x/gpio.h
+++ b/include/asm-x86/mach-rdc321x/gpio.h
@@ -1,6 +1,8 @@
 #ifndef _RDC321X_GPIO_H
 #define _RDC321X_GPIO_H
 
+#include <linux/kernel.h>
+
 extern int rdc_gpio_get_value(unsigned gpio);
 extern void rdc_gpio_set_value(unsigned gpio, int value);
 extern int rdc_gpio_direction_input(unsigned gpio);
@@ -18,6 +20,7 @@ static inline int gpio_request(unsigned gpio, const char *label)
 
 static inline void gpio_free(unsigned gpio)
 {
+	might_sleep();
 	rdc_gpio_free(gpio);
 }
 
-- 
1.5.6.5

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