diff options
Diffstat (limited to 'drivers/staging/iio/industrialio-core.c')
| -rw-r--r-- | drivers/staging/iio/industrialio-core.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/staging/iio/industrialio-core.c b/drivers/staging/iio/industrialio-core.c index fbf24bdc56d..ee5e0640aa2 100644 --- a/drivers/staging/iio/industrialio-core.c +++ b/drivers/staging/iio/industrialio-core.c @@ -169,8 +169,11 @@ static ssize_t iio_event_chrdev_read(struct file *filep, { struct iio_event_interface *ev_int = filep->private_data; struct iio_detected_event_list *el; + size_t len = sizeof(el->ev); int ret; - size_t len; + + if (count < len) + return -EINVAL; mutex_lock(&ev_int->event_list_lock); if (list_empty(&ev_int->det_events)) { @@ -192,7 +195,6 @@ static ssize_t iio_event_chrdev_read(struct file *filep, el = list_first_entry(&ev_int->det_events, struct iio_detected_event_list, list); - len = sizeof el->ev; if (copy_to_user(buf, &(el->ev), len)) { ret = -EFAULT; goto error_mutex_unlock; |