linux-kernel - [PATCH v2 01/16] reset: add non CONFIG_RESET

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Message-Id: <1389337217-29032-2-git-send-email-wens@csie.org>
Date:	Fri, 10 Jan 2014 15:00:02 +0800
From:	Chen-Yu Tsai <wens@...e.org>
To:	Srinivas Kandagatla <srinivas.kandagatla@...com>,
	Giuseppe Cavallaro <peppe.cavallaro@...com>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Philipp Zabel <p.zabel@...gutronix.de>
Cc:	Chen-Yu Tsai <wens@...e.org>, netdev@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-sunxi@...glegroups.com,
	linux-kernel@...r.kernel.org,
	Rob Herring <rob.herring@...xeda.com>,
	Emilio Lopez <emilio@...pez.com.ar>,
	Mike Turquette <mturquette@...aro.org>
Subject: [PATCH v2 01/16] reset: add non CONFIG_RESET_CONTROLLER routines

Some drivers are shared between platforms that may or may not
have RESET_CONTROLLER selected for them. Add dummy functions
when RESET_CONTROLLER is not selected, thereby eliminating the
need for drivers to enclose reset_control_*() calls within
#ifdef CONFIG_RESET_CONTROLLER, #endif

Signed-off-by: Chen-Yu Tsai <wens@...e.org>
---
 include/linux/reset.h | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/include/linux/reset.h b/include/linux/reset.h
index 6082247..38aa616 100644
--- a/include/linux/reset.h
+++ b/include/linux/reset.h
@@ -4,6 +4,8 @@
 struct device;
 struct reset_control;
 
+#ifdef CONFIG_RESET_CONTROLLER
+
 int reset_control_reset(struct reset_control *rstc);
 int reset_control_assert(struct reset_control *rstc);
 int reset_control_deassert(struct reset_control *rstc);
@@ -14,4 +16,41 @@ struct reset_control *devm_reset_control_get(struct device *dev, const char *id)
 
 int device_reset(struct device *dev);
 
+#else /* !CONFIG_RESET_CONTROLLER */
+
+static inline int reset_control_reset(struct reset_control *rstc)
+{
+	return 0;
+}
+
+static inline int reset_control_assert(struct reset_control *rstc)
+{
+	return 0;
+}
+
+static inline int reset_control_deassert(struct reset_control *rstc)
+{
+	return 0;
+}
+
+static inline struct reset_control *reset_control_get(struct device *dev,
+		const char *id)
+{
+	return NULL;
+}
+static inline void reset_control_put(struct reset_control *rstc) {}
+
+static inline struct reset_control *devm_reset_control_get(struct device *dev,
+		const char *id)
+{
+	return NULL;
+}
+
+static inline int device_reset(struct device *dev)
+{
+	return 0;
+}
+
+#endif
+
 #endif
-- 
1.8.5.2

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