linux-kernel - [PATCH 2/2] gpio: do not call __gpio_xxx under !CONFIG

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Message-Id: <1351666855-23854-2-git-send-email-yuanhan.liu@linux.intel.com>
Date:	Wed, 31 Oct 2012 15:00:55 +0800
From:	Yuanhan Liu <yuanhan.liu@...ux.intel.com>
To:	linux-kernel@...r.kernel.org
Cc:	Yuanhan Liu <yuanhan.liu@...ux.intel.com>,
	Grant Likely <grant.likely@...retlab.ca>,
	Linus Walleij <linus.walleij@...aro.org>,
	Fengguang Wu <fengguang.wu@...el.com>
Subject: [PATCH 2/2] gpio: do not call __gpio_xxx under !CONFIG_GPIOLIB

Those functions are availabe only when CONFIG_GPIOLIB is set. So, we
should not call them under !CONFIG_GPIOLIB block.

This would fix following build errros:
include/asm-generic/gpio.h: In function 'gpio_get_value_cansleep':
include/asm-generic/gpio.h:220:2: error: implicit declaration of function '__gpio_get_value'
include/asm-generic/gpio.h: In function 'gpio_set_value_cansleep':
nclude/asm-generic/gpio.h:226:2: error: implicit declaration of function '__gpio_set_value'

Cc: Grant Likely <grant.likely@...retlab.ca>
Cc: Linus Walleij <linus.walleij@...aro.org>
Cc: Fengguang Wu <fengguang.wu@...el.com>
Signed-off-by: Yuanhan Liu <yuanhan.liu@...ux.intel.com>
---
 include/asm-generic/gpio.h |    7 +++----
 1 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index a73272d..704bf5d 100644
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -257,14 +257,13 @@ static inline int gpio_cansleep(unsigned gpio)
 
 static inline int gpio_get_value_cansleep(unsigned gpio)
 {
-	might_sleep();
-	return __gpio_get_value(gpio);
+	WARN_ON(1);
+	return 0;
 }
 
 static inline void gpio_set_value_cansleep(unsigned gpio, int value)
 {
-	might_sleep();
-	__gpio_set_value(gpio, value);
+	WARN_ON(1);
 }
 
 #endif /* !CONFIG_GPIOLIB */
-- 
1.7.7.6

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