Input: simplify name handling for certain input handles

For evdev, joydev and mousedev, instead of having a separate character array
holding name of the handle, use struct devce's name which is the same.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

3 files changed, 14 insertions, 18 deletions

diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c
index 7a7a026ba712..c238116400b3 100644
--- a/drivers/input/evdev.c
+++ b/drivers/input/evdev.c
@@ -25,7 +25,6 @@ struct evdev {
         int exist;
         int open;
         int minor;
-        char name[16];
         struct input_handle handle;
         wait_queue_head_t wait;
         struct evdev_client *grab;
@@ -609,7 +608,8 @@ static long evdev_do_ioctl(struct file *file, unsigned int cmd,
                                                     p, compat_mode);
 
                         if (_IOC_NR(cmd) == _IOC_NR(EVIOCGNAME(0)))
-                                return str_to_user(dev->name, _IOC_SIZE(cmd), p);
+                                return str_to_user(dev_name(&evdev->dev),
+                                                   _IOC_SIZE(cmd), p);
 
                         if (_IOC_NR(cmd) == _IOC_NR(EVIOCGPHYS(0)))
                                 return str_to_user(dev->phys, _IOC_SIZE(cmd), p);
@@ -807,16 +807,15 @@ static int evdev_connect(struct input_handler *handler, struct input_dev *dev,
         mutex_init(&evdev->mutex);
         init_waitqueue_head(&evdev->wait);
 
-        snprintf(evdev->name, sizeof(evdev->name), "event%d", minor);
+        dev_set_name(&evdev->dev, "event%d", minor);
         evdev->exist = 1;
         evdev->minor = minor;
 
         evdev->handle.dev = input_get_device(dev);
-        evdev->handle.name = evdev->name;
+        evdev->handle.name = dev_name(&evdev->dev);
         evdev->handle.handler = handler;
         evdev->handle.private = evdev;
 
-        dev_set_name(&evdev->dev, evdev->name);
         evdev->dev.devt = MKDEV(INPUT_MAJOR, EVDEV_MINOR_BASE + minor);
         evdev->dev.class = &input_class;
         evdev->dev.parent = &dev->dev;
diff --git a/drivers/input/joydev.c b/drivers/input/joydev.c
index 4224f0112849..15bb41195bea 100644
--- a/drivers/input/joydev.c
+++ b/drivers/input/joydev.c
@@ -39,7 +39,6 @@ struct joydev {
         int exist;
         int open;
         int minor;
-        char name[16];
         struct input_handle handle;
         wait_queue_head_t wait;
         struct list_head client_list;
@@ -537,12 +536,14 @@ static int joydev_ioctl_common(struct joydev *joydev,
         default:
                 if ((cmd & ~IOCSIZE_MASK) == JSIOCGNAME(0)) {
                         int len;
-                        if (!dev->name)
+                        const char *name = dev_name(&dev->dev);
+
+                        if (!name)
                                 return 0;
-                        len = strlen(dev->name) + 1;
+                        len = strlen(name) + 1;
                         if (len > _IOC_SIZE(cmd))
                                 len = _IOC_SIZE(cmd);
-                        if (copy_to_user(argp, dev->name, len))
+                        if (copy_to_user(argp, name, len))
                                 return -EFAULT;
                         return len;
                 }
@@ -742,13 +743,13 @@ static int joydev_connect(struct input_handler *handler, struct input_dev *dev,
         mutex_init(&joydev->mutex);
         init_waitqueue_head(&joydev->wait);
 
-        snprintf(joydev->name, sizeof(joydev->name), "js%d", minor);
+        dev_set_name(&joydev->dev, "js%d", minor);
         joydev->exist = 1;
         joydev->minor = minor;
 
         joydev->exist = 1;
         joydev->handle.dev = input_get_device(dev);
-        joydev->handle.name = joydev->name;
+        joydev->handle.name = dev_name(&joydev->dev);
         joydev->handle.handler = handler;
         joydev->handle.private = joydev;
 
@@ -797,7 +798,6 @@ static int joydev_connect(struct input_handler *handler, struct input_dev *dev,
                 }
         }
 
-        dev_set_name(&joydev->dev, joydev->name);
         joydev->dev.devt = MKDEV(INPUT_MAJOR, JOYDEV_MINOR_BASE + minor);
         joydev->dev.class = &input_class;
         joydev->dev.parent = &dev->dev;
diff --git a/drivers/input/mousedev.c b/drivers/input/mousedev.c
index 17fd6d46d082..966b8868f792 100644
--- a/drivers/input/mousedev.c
+++ b/drivers/input/mousedev.c
@@ -60,7 +60,6 @@ struct mousedev {
         int exist;
         int open;
         int minor;
-        char name[16];
         struct input_handle handle;
         wait_queue_head_t wait;
         struct list_head client_list;
@@ -863,19 +862,17 @@ static struct mousedev *mousedev_create(struct input_dev *dev,
         init_waitqueue_head(&mousedev->wait);
 
         if (minor == MOUSEDEV_MIX)
-                strlcpy(mousedev->name, "mice", sizeof(mousedev->name));
+                dev_set_name(&mousedev->dev, "mice");
         else
-                snprintf(mousedev->name, sizeof(mousedev->name),
-                         "mouse%d", minor);
+                dev_set_name(&mousedev->dev, "mouse%d", minor);
 
         mousedev->minor = minor;
         mousedev->exist = 1;
         mousedev->handle.dev = input_get_device(dev);
-        mousedev->handle.name = mousedev->name;
+        mousedev->handle.name = dev_name(&mousedev->dev);
         mousedev->handle.handler = handler;
         mousedev->handle.private = mousedev;
 
-        dev_set_name(&mousedev->dev, mousedev->name);
         mousedev->dev.class = &input_class;
         if (dev)
                 mousedev->dev.parent = &dev->dev;