diff options
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/industrialio-buffer.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c index d12b384d94bf..796376ac2475 100644 --- a/drivers/iio/industrialio-buffer.c +++ b/drivers/iio/industrialio-buffer.c @@ -664,9 +664,23 @@ int iio_update_buffers(struct iio_dev *indio_dev, { int ret; + if (insert_buffer == remove_buffer) + return 0; + mutex_lock(&indio_dev->info_exist_lock); mutex_lock(&indio_dev->mlock); + if (insert_buffer && iio_buffer_is_active(insert_buffer)) + insert_buffer = NULL; + + if (remove_buffer && !iio_buffer_is_active(remove_buffer)) + remove_buffer = NULL; + + if (!insert_buffer && !remove_buffer) { + ret = 0; + goto out_unlock; + } + if (indio_dev->info == NULL) { ret = -ENODEV; goto out_unlock; |