RK31/RK30:add vfree(buf); to fix memory leaks in video_state_write();

diff --git a/arch/arm/plat-rk/ddr_freq.c b/arch/arm/plat-rk/ddr_freq.c
index 5ec16e38b7ef2c1c812c8e60d817ed742ebd1fe5..52d01020dca0a2135cd97d82ef3508ce9fea5448 100755 (executable)
--- a/arch/arm/plat-rk/ddr_freq.c
+++ b/arch/arm/plat-rk/ddr_freq.c
@@ -302,8 +302,10 @@ static ssize_t video_state_write(struct file *file, const char __user *buffer,
        cookie_pot = buf;
 
        if (count < 1)
+               vfree(buf);
                return count;
        if (copy_from_user(cookie_pot, buffer, count)) {
+               vfree(buf);
                return -EFAULT;
        }
 
@@ -349,10 +351,12 @@ static ssize_t video_state_write(struct file *file, const char __user *buffer,
                }
                break;
        default:
+               vfree(buf);
                return -EINVAL;
 
        }
        ddr.video_state = state;
+       vfree(buf);
        return count;
 }