Input: make name, phys and uniq be 'const char *' because once

       set noone should attempt to change them.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 12 insertions, 11 deletions

diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c
index c3eebf593ab6..d5c5b32045af 100644
--- a/drivers/input/misc/uinput.c
+++ b/drivers/input/misc/uinput.c
@@ -251,6 +251,7 @@ static int uinput_alloc_device(struct file *file, const char __user *buffer, siz
         struct uinput_user_dev  *user_dev;
         struct input_dev        *dev;
         struct uinput_device    *udev;
+        char                    *name;
         int                     size;
         int                     retval;
 
@@ -274,13 +275,13 @@ static int uinput_alloc_device(struct file *file, const char __user *buffer, siz
                 kfree(dev->name);
 
         size = strnlen(user_dev->name, UINPUT_MAX_NAME_SIZE) + 1;
-        dev->name = kmalloc(size, GFP_KERNEL);
-        if (!dev->name) {
+        dev->name = name = kmalloc(size, GFP_KERNEL);
+        if (!name) {
                 retval = -ENOMEM;
                 goto exit;
         }
+        strlcpy(name, user_dev->name, size);
 
-        strlcpy(dev->name, user_dev->name, size);
         dev->id.bustype = user_dev->id.bustype;
         dev->id.vendor  = user_dev->id.vendor;
         dev->id.product = user_dev->id.product;
@@ -397,6 +398,7 @@ static int uinput_ioctl(struct inode *inode, struct file *file, unsigned int cmd
         struct uinput_ff_erase  ff_erase;
         struct uinput_request   *req;
         int                     length;
+        char                    *phys;
 
         udev = file->private_data;
 
@@ -494,20 +496,19 @@ static int uinput_ioctl(struct inode *inode, struct file *file, unsigned int cmd
                                 retval = -EFAULT;
                                 break;
                         }
-                        if (NULL != udev->dev->phys)
-                                kfree(udev->dev->phys);
-                        udev->dev->phys = kmalloc(length, GFP_KERNEL);
-                        if (!udev->dev->phys) {
+                        kfree(udev->dev->phys);
+                        udev->dev->phys = phys = kmalloc(length, GFP_KERNEL);
+                        if (!phys) {
                                 retval = -ENOMEM;
                                 break;
                         }
-                        if (copy_from_user(udev->dev->phys, p, length)) {
-                                retval = -EFAULT;
-                                kfree(udev->dev->phys);
+                        if (copy_from_user(phys, p, length)) {
                                 udev->dev->phys = NULL;
+                                kfree(phys);
+                                retval = -EFAULT;
                                 break;
                         }
-                        udev->dev->phys[length - 1] = '\0';
+                        phys[length - 1] = '\0';
                         break;
 
                 case UI_BEGIN_FF_UPLOAD: