HID: unlock properly on error paths in hidraw_ioctl()

We can't return immediately because lock_kernel() is held.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index 7324496..02b19db 100644 (file)
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -267,8 +267,10 @@ static long hidraw_ioctl(struct file *file, unsigned int cmd,
                default:
                        {
                                struct hid_device *hid = dev->hid;
-                               if (_IOC_TYPE(cmd) != 'H' || _IOC_DIR(cmd) != _IOC_READ)
-                                       return -EINVAL;
+                               if (_IOC_TYPE(cmd) != 'H' || _IOC_DIR(cmd) != _IOC_READ) {
+                                       ret = -EINVAL;
+                                       break;
+                               }
 
                                if (_IOC_NR(cmd) == _IOC_NR(HIDIOCGRAWNAME(0))) {
                                        int len;
@@ -277,8 +279,9 @@ static long hidraw_ioctl(struct file *file, unsigned int cmd,
                                        len = strlen(hid->name) + 1;
                                        if (len > _IOC_SIZE(cmd))
                                                len = _IOC_SIZE(cmd);
-                                       return copy_to_user(user_arg, hid->name, len) ?
+                                       ret = copy_to_user(user_arg, hid->name, len) ?
                                                -EFAULT : len;
+                                       break;
                                }
 
                                if (_IOC_NR(cmd) == _IOC_NR(HIDIOCGRAWPHYS(0))) {
@@ -288,12 +291,13 @@ static long hidraw_ioctl(struct file *file, unsigned int cmd,
                                        len = strlen(hid->phys) + 1;
                                        if (len > _IOC_SIZE(cmd))
                                                len = _IOC_SIZE(cmd);
-                                       return copy_to_user(user_arg, hid->phys, len) ?
+                                       ret = copy_to_user(user_arg, hid->phys, len) ?
                                                -EFAULT : len;
+                                       break;
                                }
                 }
 
-                       ret = -ENOTTY;
+               ret = -ENOTTY;
        }
        unlock_kernel();
        return ret;