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Subject[PATCH 3/3] PM: convert wakeup flag accessors to inline functions
This patch (as1058) improves the wakeup macros in include/linux/pm.h.
All but the trivial ones are converted to inline routines, which
requires moving them to a separate header file since they depend on
the definition of struct device.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>

---
Index: usb-2.6/include/linux/pm.h
===================================================================
--- usb-2.6.orig/include/linux/pm.h
+++ usb-2.6/include/linux/pm.h
@@ -211,54 +211,10 @@ static inline int device_suspend(pm_mess
return 0;
}

-#define suspend_report_result(fn, ret) do { } while (0)
+#define suspend_report_result(fn, ret) do {} while (0)

#endif /* !CONFIG_PM_SLEEP */

-#ifdef CONFIG_PM
-
-#define device_set_wakeup_enable(dev,val) \
- ((dev)->power.should_wakeup = !!(val))
-#define device_may_wakeup(dev) \
- (device_can_wakeup(dev) && (dev)->power.should_wakeup)
-
-/*
- * Platform hook to activate device wakeup capability, if that's not already
- * handled by enable_irq_wake() etc.
- * Returns zero on success, else negative errno
- */
-extern int (*platform_enable_wakeup)(struct device *dev, int is_on);
-
-static inline int call_platform_enable_wakeup(struct device *dev, int is_on)
-{
- if (platform_enable_wakeup)
- return (*platform_enable_wakeup)(dev, is_on);
- return 0;
-}
-
-#else /* !CONFIG_PM */
-
-#define device_set_wakeup_enable(dev,val) do{}while(0)
-#define device_may_wakeup(dev) (0)
-
-static inline int call_platform_enable_wakeup(struct device *dev, int is_on)
-{
- return 0;
-}
-
-#endif /* !CONFIG_PM */
-
-/* changes to device_may_wakeup take effect on the next pm state change.
- * by default, devices should wakeup if they can.
- */
-#define device_can_wakeup(dev) \
- ((dev)->power.can_wakeup)
-#define device_init_wakeup(dev,val) \
- do { \
- device_can_wakeup(dev) = !!(val); \
- device_set_wakeup_enable(dev,val); \
- } while(0)
-
/*
* Global Power Management flags
* Used to keep APM and ACPI from both being active
Index: usb-2.6/include/linux/device.h
===================================================================
--- usb-2.6.orig/include/linux/device.h
+++ usb-2.6/include/linux/device.h
@@ -475,6 +475,9 @@ struct device {
void (*release)(struct device *dev);
};

+/* Get the wakeup routines, which depend on struct device */
+#include <linux/pm_wakeup.h>
+
#ifdef CONFIG_NUMA
static inline int dev_to_node(struct device *dev)
{
Index: usb-2.6/include/linux/pm_wakeup.h
===================================================================
--- /dev/null
+++ usb-2.6/include/linux/pm_wakeup.h
@@ -0,0 +1,90 @@
+/*
+ * pm_wakeup.h - Power management wakeup interface
+ *
+ * Copyright (C) 2008 Alan Stern
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef _LINUX_PM_WAKEUP_H
+#define _LINUX_PM_WAKEUP_H
+
+#ifndef _DEVICE_H_
+# error "please don't include this file directly"
+#endif
+
+#ifdef CONFIG_PM
+
+/* changes to device_may_wakeup take effect on the next pm state change.
+ * by default, devices should wakeup if they can.
+ */
+static inline void device_init_wakeup(struct device *dev, int val)
+{
+ dev->power.can_wakeup = dev->power.should_wakeup = !!val;
+}
+
+static inline int device_can_wakeup(struct device *dev)
+{
+ return dev->power.can_wakeup;
+}
+
+static inline void device_set_wakeup_enable(struct device *dev, int val)
+{
+ dev->power.should_wakeup = !!val;
+}
+
+static inline int device_may_wakeup(struct device *dev)
+{
+ return dev->power.can_wakeup & dev->power.should_wakeup;
+}
+
+/*
+ * Platform hook to activate device wakeup capability, if that's not already
+ * handled by enable_irq_wake() etc.
+ * Returns zero on success, else negative errno
+ */
+extern int (*platform_enable_wakeup)(struct device *dev, int is_on);
+
+static inline int call_platform_enable_wakeup(struct device *dev, int is_on)
+{
+ if (platform_enable_wakeup)
+ return (*platform_enable_wakeup)(dev, is_on);
+ return 0;
+}
+
+#else /* !CONFIG_PM */
+
+/* For some reason the next two routines work even without CONFIG_PM */
+static inline void device_init_wakeup(struct device *dev, int val)
+{
+ dev->power.can_wakeup = !!val;
+}
+
+static inline int device_can_wakeup(struct device *dev)
+{
+ return dev->power.can_wakeup;
+}
+
+#define device_set_wakeup_enable(dev, val) do {} while (0)
+#define device_may_wakeup(dev) 0
+
+static inline int call_platform_enable_wakeup(struct device *dev, int is_on)
+{
+ return 0;
+}
+
+#endif /* !CONFIG_PM */
+
+#endif /* _LINUX_PM_WAKEUP_H */


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