drivers: make device_type const

The device_type structure does not contain data that changes
during usage and should be const. This allows devices to declare
the struct const.

I have patches to change all the subsystems, but need the infra
structure change first.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 81b78ed..fb8130c 100644 (file)
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -400,7 +400,7 @@ static void device_remove_groups(struct device *dev,
 static int device_add_attrs(struct device *dev)
 {
        struct class *class = dev->class;
-       struct device_type *type = dev->type;
+       const struct device_type *type = dev->type;
        int error;
 
        if (class) {
@@ -440,7 +440,7 @@ static int device_add_attrs(struct device *dev)
 static void device_remove_attrs(struct device *dev)
 {
        struct class *class = dev->class;
-       struct device_type *type = dev->type;
+       const struct device_type *type = dev->type;
 
        device_remove_groups(dev, dev->groups);
 

diff --git a/include/linux/device.h b/include/linux/device.h
index d484051..350ceda 100644 (file)
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -408,7 +408,7 @@ struct device {
 
        struct kobject kobj;
        const char              *init_name; /* initial name of the device */
-       struct device_type      *type;
+       const struct device_type *type;
 
        struct mutex            mutex;  /* mutex to synchronize calls to
                                         * its driver.