[PATCH v4 0/2] upon streaming, check that the pipeline starts with a source entity

[Dafna Hirschfeld <dafna.hirschfeld@collabora.com>]

The first patch in this patchset moves the dev field of each
entity struct to the common struct vimc_ent_device, this is
used by the first and the second patches to have access to 'dev'
in the streamer and replace pr_err with dev_err.

The second patch was first sent alone, then it was sent again
as part of the patchset
"media: vimc: use configfs in order to configure devices topologies"
It fixes a crashing bug when the pipeline does not start with a
source entity.

Fixes from v3:
- set the error value to -EINVAL when the vimc entity pointer
is not found in vimc_streamer_pipeline_init
- have more precise error messages in vimc_streamer_pipeline_init

Dafna Hirschfeld (2):
  media: vimc: move the dev field of each entity to vimc_ent_dev
  media: vimc: upon streaming, check that the pipeline starts with a
    source entity

 drivers/media/platform/vimc/vimc-capture.c  |  7 +++--
 drivers/media/platform/vimc/vimc-common.c   | 10 +++++++
 drivers/media/platform/vimc/vimc-common.h   |  7 +++++
 drivers/media/platform/vimc/vimc-debayer.c  | 15 +++++------
 drivers/media/platform/vimc/vimc-scaler.c   | 11 ++++----
 drivers/media/platform/vimc/vimc-sensor.c   |  5 ++--
 drivers/media/platform/vimc/vimc-streamer.c | 29 ++++++++++++++-------
 7 files changed, 53 insertions(+), 31 deletions(-)

-- 
2.20.1