When going through the code of the buffer-cb interface and all it's users, I realized that the stm32_adfsdm driver is calling `iio_channel_get_all_cb()` with NULL for the cb. After going a bit trough the stm drivers, it looks like this is actually intentional. However, it is clear that we have a clear/direct route here for a NULL pointer dereference. This change makes cb a required parameter of the API. The first patch makes the necessary changes to the stm32_adfsdm driver so that it does not break. Nuno Sá (1): iio: buffer: Return error if no callback is given Olivier Moysan (1): ASoC: stm32: dfsdm: add stm32_adfsdm_dummy_cb() callback drivers/iio/buffer/industrialio-buffer-cb.c | 5 +++++ sound/soc/stm/stm32_adfsdm.c | 12 +++++++++++- 2 files changed, 16 insertions(+), 1 deletion(-) -- 2.17.1
