diff options
Diffstat (limited to 'drivers/input/evdev.c')
| -rw-r--r-- | drivers/input/evdev.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c index c908c5f8364..535fea4fe67 100644 --- a/drivers/input/evdev.c +++ b/drivers/input/evdev.c @@ -28,7 +28,7 @@ struct evdev { int minor; struct input_handle handle; wait_queue_head_t wait; - struct evdev_client *grab; + struct evdev_client __rcu *grab; struct list_head client_list; spinlock_t client_lock; /* protects client_list */ struct mutex mutex; @@ -669,6 +669,9 @@ static long evdev_do_ioctl(struct file *file, unsigned int cmd, if ((_IOC_NR(cmd) & ~ABS_MAX) == _IOC_NR(EVIOCGABS(0))) { + if (!dev->absinfo) + return -EINVAL; + t = _IOC_NR(cmd) & ABS_MAX; abs = dev->absinfo[t]; @@ -680,10 +683,13 @@ static long evdev_do_ioctl(struct file *file, unsigned int cmd, } } - if (_IOC_DIR(cmd) == _IOC_READ) { + if (_IOC_DIR(cmd) == _IOC_WRITE) { if ((_IOC_NR(cmd) & ~ABS_MAX) == _IOC_NR(EVIOCSABS(0))) { + if (!dev->absinfo) + return -EINVAL; + t = _IOC_NR(cmd) & ABS_MAX; if (copy_from_user(&abs, p, min_t(size_t, @@ -761,7 +767,8 @@ static const struct file_operations evdev_fops = { .compat_ioctl = evdev_ioctl_compat, #endif .fasync = evdev_fasync, - .flush = evdev_flush + .flush = evdev_flush, + .llseek = no_llseek, }; static int evdev_install_chrdev(struct evdev *evdev) |