linux-kernel - [PATCH] gpiolib: iron out include ladder mistakes

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Date:	Tue, 6 Nov 2012 17:21:03 +0100
From:	Linus Walleij <linus.walleij@...ricsson.com>
To:	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	Shiraz Hashim <shiraz.hashim@...com>,
	Viresh Kumar <viresh.kumar@...aro.org>
Cc:	Stephen Warren <swarren@...dia.com>,
	Anmar Oueja <anmar.oueja@...aro.org>,
	Grant Likely <grant.likely@...retlab.ca>,
	Linus Walleij <linus.walleij@...aro.org>
Subject: [PATCH] gpiolib: iron out include ladder mistakes

From: Linus Walleij <linus.walleij@...aro.org>

The <*/gpio.h> includes are updated again: now we need to account
for the problem introduced by commit:
595679a8038584df7b9398bf34f61db3c038bfea
"gpiolib: fix up function prototypes etc"

Actually we need static inlines in include/asm-generic/gpio.h
as well since we may have GPIOLIB but not PINCTRL.

And we need to keep the static inlines in <linux/gpio.h>
but here for the !CONFIG_GENERIC_GPIO case, and then we
may as well throw in a few warnings like the other
prototypes there, if someone would have the bad taste
of compiling without GENERIC_GPIO even.

Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
---
 include/asm-generic/gpio.h | 13 +++++++++++++
 include/linux/gpio.h       |  7 +++----
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index 50d995e..b546edb 100644
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -67,6 +67,19 @@ int gpiochip_add_pin_range(struct gpio_chip *chip, const char *pinctl_name,
 			   unsigned int pin_base, unsigned int npins);
 void gpiochip_remove_pin_ranges(struct gpio_chip *chip);
 
+#else
+
+static inline int
+gpiochip_add_pin_range(struct gpio_chip *chip, const char *pinctl_name,
+		       unsigned int pin_base, unsigned int npins)
+{
+}
+
+static inline void
+gpiochip_remove_pin_ranges(struct gpio_chip *chip)
+{
+}
+
 #endif
 
 /**
diff --git a/include/linux/gpio.h b/include/linux/gpio.h
index 81bbfe5..7ba2762 100644
--- a/include/linux/gpio.h
+++ b/include/linux/gpio.h
@@ -231,21 +231,20 @@ static inline int irq_to_gpio(unsigned irq)
 	return -EINVAL;
 }
 
-#ifdef CONFIG_PINCTRL
-
 static inline int
 gpiochip_add_pin_range(struct gpio_chip *chip, const char *pinctl_name,
 		       unsigned int pin_base, unsigned int npins)
 {
+	WARN_ON(1);
+	return -EINVAL;
 }
 
 static inline void
 gpiochip_remove_pin_ranges(struct gpio_chip *chip)
 {
+	WARN_ON(1);
 }
 
-#endif /* CONFIG_PINCTRL */
-
 #endif /* ! CONFIG_GENERIC_GPIO */
 
 #endif /* __LINUX_GPIO_H */
-- 
1.7.11.3

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