Driver core: Constify struct sysfs_ops in struct kobj_type

Constify struct sysfs_ops.

This is part of the ops structure constification
effort started by Arjan van de Ven et al.

Benefits of this constification:

 * prevents modification of data that is shared
   (referenced) by many other structure instances
   at runtime

 * detects/prevents accidental (but not intentional)
   modification attempts on archs that enforce
   read-only kernel data at runtime

 * potentially better optimized code as the compiler
   can assume that the const data cannot be changed

 * the compiler/linker move const data into .rodata
   and therefore exclude them from false sharing

Signed-off-by: Emese Revfy <re.emese@gmail.com>
Acked-by: David Teigland <teigland@redhat.com>
Acked-by: Matt Domsch <Matt_Domsch@dell.com>
Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Acked-by: Hans J. Koch <hjk@linutronix.de>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Acked-by: Jens Axboe <jens.axboe@oracle.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

4 files changed, 6 insertions, 6 deletions

diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 2afe599eb35d..cca1aa10054c 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -70,7 +70,7 @@ static ssize_t drv_attr_store(struct kobject *kobj, struct attribute *attr,
         return ret;
 }
 
-static struct sysfs_ops driver_sysfs_ops = {
+static const struct sysfs_ops driver_sysfs_ops = {
         .show   = drv_attr_show,
         .store  = drv_attr_store,
 };
@@ -115,7 +115,7 @@ static ssize_t bus_attr_store(struct kobject *kobj, struct attribute *attr,
         return ret;
 }
 
-static struct sysfs_ops bus_sysfs_ops = {
+static const struct sysfs_ops bus_sysfs_ops = {
         .show   = bus_attr_show,
         .store  = bus_attr_store,
 };
diff --git a/drivers/base/class.c b/drivers/base/class.c
index 2e297cc4cd3d..0147f476b8a9 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -63,7 +63,7 @@ static void class_release(struct kobject *kobj)
         kfree(cp);
 }
 
-static struct sysfs_ops class_sysfs_ops = {
+static const struct sysfs_ops class_sysfs_ops = {
         .show   = class_attr_show,
         .store  = class_attr_store,
 };
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 58ec1069f4b0..b0d6646a2814 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -100,7 +100,7 @@ static ssize_t dev_attr_store(struct kobject *kobj, struct attribute *attr,
         return ret;
 }
 
-static struct sysfs_ops dev_sysfs_ops = {
+static const struct sysfs_ops dev_sysfs_ops = {
         .show   = dev_attr_show,
         .store  = dev_attr_store,
 };
diff --git a/drivers/base/sys.c b/drivers/base/sys.c
index 747c99e0568b..8980feec5d14 100644
--- a/drivers/base/sys.c
+++ b/drivers/base/sys.c
@@ -54,7 +54,7 @@ sysdev_store(struct kobject *kobj, struct attribute *attr,
         return -EIO;
 }
 
-static struct sysfs_ops sysfs_ops = {
+static const struct sysfs_ops sysfs_ops = {
         .show   = sysdev_show,
         .store  = sysdev_store,
 };
@@ -104,7 +104,7 @@ static ssize_t sysdev_class_store(struct kobject *kobj, struct attribute *attr,
         return -EIO;
 }
 
-static struct sysfs_ops sysfs_class_ops = {
+static const struct sysfs_ops sysfs_class_ops = {
         .show   = sysdev_class_show,
         .store  = sysdev_class_store,
 };