diff options
Diffstat (limited to 'drivers/iio/industrialio-buffer.c')
| -rw-r--r-- | drivers/iio/industrialio-buffer.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c index 36c39dc..6c7a9c5 100644 --- a/drivers/iio/industrialio-buffer.c +++ b/drivers/iio/industrialio-buffer.c @@ -48,6 +48,9 @@ ssize_t iio_buffer_read_first_n_outer(struct file *filp, char __user *buf, struct iio_dev *indio_dev = filp->private_data; struct iio_buffer *rb = indio_dev->buffer; + if (!indio_dev->info) + return -ENODEV; + if (!rb || !rb->access->read_first_n) return -EINVAL; return rb->access->read_first_n(rb, n, buf); @@ -62,6 +65,9 @@ unsigned int iio_buffer_poll(struct file *filp, struct iio_dev *indio_dev = filp->private_data; struct iio_buffer *rb = indio_dev->buffer; + if (!indio_dev->info) + return -ENODEV; + poll_wait(filp, &rb->pollq, wait); if (rb->stufftoread) return POLLIN | POLLRDNORM; |
