[PATCH 0/2] Make cb a required parameter of buffer-cb

["Nuno Sá" <nuno.sa@analog.com>]

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