From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Wed, 18 Apr 2012 22:16:47 +0000 (+0000)
Subject: powerpc/windfarm: const'ify and add "priv" field to controls & sensors
X-Git-Tag: next-20120503~94^2~14
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=e074d08e2b98;p=karo-tx-linux.git

powerpc/windfarm: const'ify and add "priv" field to controls & sensors

const'ify the sensor ops and name and add a void* for use by
the control and sensor drivers to point back to their private
data, avoiding the need to create a wrapper data structure
per sensor or control instance.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

diff --git a/drivers/macintosh/windfarm.h b/drivers/macintosh/windfarm.h
index 7a2482cc26a7..3ef192a1fca0 100644
--- a/drivers/macintosh/windfarm.h
+++ b/drivers/macintosh/windfarm.h
@@ -35,12 +35,12 @@ struct wf_control_ops {
 };
 
 struct wf_control {
-	struct list_head	link;
-	struct wf_control_ops	*ops;
-	char			*name;
-	int			type;
-	struct kref		ref;
-	struct device_attribute	attr;
+	struct list_head		link;
+	const struct wf_control_ops	*ops;
+	const char			*name;
+	int				type;
+	struct kref			ref;
+	struct device_attribute		attr;
 };
 
 #define WF_CONTROL_TYPE_GENERIC		0
@@ -85,11 +85,12 @@ struct wf_sensor_ops {
 };
 
 struct wf_sensor {
-	struct list_head	link;
-	struct wf_sensor_ops	*ops;
-	char			*name;
-	struct kref		ref;
-	struct device_attribute	attr;
+	struct list_head		link;
+	const struct wf_sensor_ops	*ops;
+	const char			*name;
+	struct kref			ref;
+	struct device_attribute		attr;
+	void				*priv;
 };
 
 /* Same lifetime rules as controls */