diff options
Diffstat (limited to 'drivers/input/evdev.c')
| -rw-r--r-- | drivers/input/evdev.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c index c908c5f83645..9ddafc30f432 100644 --- a/drivers/input/evdev.c +++ b/drivers/input/evdev.c @@ -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, |