On 11/12/20 4:13 PM, Nuno Sá wrote:
Make sure that a callback is actually present before trying to call
it...
Signed-off-by: Nuno Sá <nuno.sa@xxxxxxxxxx>
---
drivers/iio/buffer/industrialio-buffer-cb.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/iio/buffer/industrialio-buffer-cb.c b/drivers/iio/buffer/industrialio-buffer-cb.c
index 47c96f7f4976..b4385f59399d 100644
--- a/drivers/iio/buffer/industrialio-buffer-cb.c
+++ b/drivers/iio/buffer/industrialio-buffer-cb.c
@@ -27,6 +27,10 @@ static struct iio_cb_buffer *buffer_to_cb_buffer(struct iio_buffer *buffer)
static int iio_buffer_cb_store_to(struct iio_buffer *buffer, const void *data)
{
struct iio_cb_buffer *cb_buff = buffer_to_cb_buffer(buffer);
+
+ if (!cb_buff->cb)
+ return 0;
+
I think it makes more sense to check this once when the buffer is
registered instead of every time we want to call the function.
