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path: root/drivers/input/evdev.c
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Diffstat (limited to 'drivers/input/evdev.c')
-rw-r--r--drivers/input/evdev.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c
index c908c5f83645..af9ee313c10b 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,