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Date: Mon, 20 Jul 2009 22:51:37 -0700
From: Dmitry Torokhov <dmitry.torokhov@...il.com>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...e.de>
Subject: [PATCH] Driver core: make pm operations a const pointer
From: Dmitry Torokhov <dmitry.torokhov@...il.com>
They are not supposed to be modified by drivers, so make them const.
Signed-off-by: Dmitry Torokhov <dtor@...l.ru>
---
drivers/base/platform.c | 2 +-
drivers/base/power/main.c | 8 +++++---
drivers/pci/pci-driver.c | 16 ++++++++--------
include/linux/device.h | 9 +++++----
4 files changed, 19 insertions(+), 16 deletions(-)
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 81cb01b..c4b3fce 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -925,7 +925,7 @@ static int platform_pm_restore_noirq(struct device *dev)
#endif /* !CONFIG_HIBERNATION */
-static struct dev_pm_ops platform_dev_pm_ops = {
+static const struct dev_pm_ops platform_dev_pm_ops = {
.prepare = platform_pm_prepare,
.complete = platform_pm_complete,
.suspend = platform_pm_suspend,
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index 58a3e57..1b1a786 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -157,8 +157,9 @@ void device_pm_move_last(struct device *dev)
* @ops: PM operations to choose from.
* @state: PM transition of the system being carried out.
*/
-static int pm_op(struct device *dev, struct dev_pm_ops *ops,
- pm_message_t state)
+static int pm_op(struct device *dev,
+ const struct dev_pm_ops *ops,
+ pm_message_t state)
{
int error = 0;
@@ -220,7 +221,8 @@ static int pm_op(struct device *dev, struct dev_pm_ops *ops,
* The operation is executed with interrupts disabled by the only remaining
* functional CPU in the system.
*/
-static int pm_noirq_op(struct device *dev, struct dev_pm_ops *ops,
+static int pm_noirq_op(struct device *dev,
+ const struct dev_pm_ops *ops,
pm_message_t state)
{
int error = 0;
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index d76c4c8..0c2ea44 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -575,7 +575,7 @@ static void pci_pm_complete(struct device *dev)
static int pci_pm_suspend(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
- struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
+ const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
if (pci_has_legacy_pm_support(pci_dev))
return pci_legacy_suspend(dev, PMSG_SUSPEND);
@@ -613,7 +613,7 @@ static int pci_pm_suspend(struct device *dev)
static int pci_pm_suspend_noirq(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
- struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
+ const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
if (pci_has_legacy_pm_support(pci_dev))
return pci_legacy_suspend_late(dev, PMSG_SUSPEND);
@@ -672,7 +672,7 @@ static int pci_pm_resume_noirq(struct device *dev)
static int pci_pm_resume(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
- struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
+ const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
int error = 0;
/*
@@ -711,7 +711,7 @@ static int pci_pm_resume(struct device *dev)
static int pci_pm_freeze(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
- struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
+ const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
if (pci_has_legacy_pm_support(pci_dev))
return pci_legacy_suspend(dev, PMSG_FREEZE);
@@ -780,7 +780,7 @@ static int pci_pm_thaw_noirq(struct device *dev)
static int pci_pm_thaw(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
- struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
+ const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
int error = 0;
if (pci_has_legacy_pm_support(pci_dev))
@@ -799,7 +799,7 @@ static int pci_pm_thaw(struct device *dev)
static int pci_pm_poweroff(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
- struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
+ const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
if (pci_has_legacy_pm_support(pci_dev))
return pci_legacy_suspend(dev, PMSG_HIBERNATE);
@@ -872,7 +872,7 @@ static int pci_pm_restore_noirq(struct device *dev)
static int pci_pm_restore(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
- struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
+ const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
int error = 0;
/*
@@ -910,7 +910,7 @@ static int pci_pm_restore(struct device *dev)
#endif /* !CONFIG_HIBERNATION */
-struct dev_pm_ops pci_dev_pm_ops = {
+const struct dev_pm_ops pci_dev_pm_ops = {
.prepare = pci_pm_prepare,
.complete = pci_pm_complete,
.suspend = pci_pm_suspend,
diff --git a/include/linux/device.h b/include/linux/device.h
index aebb810..a286429 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -62,7 +62,7 @@ struct bus_type {
int (*suspend)(struct device *dev, pm_message_t state);
int (*resume)(struct device *dev);
- struct dev_pm_ops *pm;
+ const struct dev_pm_ops *pm;
struct bus_type_private *p;
};
@@ -132,7 +132,7 @@ struct device_driver {
int (*resume) (struct device *dev);
struct attribute_group **groups;
- struct dev_pm_ops *pm;
+ const struct dev_pm_ops *pm;
struct driver_private *p;
};
@@ -200,7 +200,8 @@ struct class {
int (*suspend)(struct device *dev, pm_message_t state);
int (*resume)(struct device *dev);
- struct dev_pm_ops *pm;
+ const struct dev_pm_ops *pm;
+
struct class_private *p;
};
@@ -291,7 +292,7 @@ struct device_type {
char *(*nodename)(struct device *dev);
void (*release)(struct device *dev);
- struct dev_pm_ops *pm;
+ const struct dev_pm_ops *pm;
};
/* interface for exporting device attributes */
--
Dmitry
--
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