[0/7] cec: introduce cec_notifier_find_hdmi_dev helper

Message

Hans Verkuil April 8, 2019, 11:03 a.m. UTC

Wen Yang reported that some CEC drivers incremented the refcount
of the HDMI device, but never decremented it, potentially leading
to memory leaks.

Rather than fixing each driver I decided to create a helper function
that finds the HDMI device and handles the refcounting correctly.

Two drivers (seco-cec and cros-ec-cec) still required a manual patch.

Regards,

	Hans

Hans Verkuil (7):
  cec-notifier: add cec_notifier_find_hdmi_dev helper
  meson: ao-cec: use new cec_notifier_find_hdmi_dev helper
  s5p_cec: use new cec_notifier_find_hdmi_dev helper
  stih_cec: use new cec_notifier_find_hdmi_dev helper
  tegra_cec: use new cec_notifier_find_hdmi_dev helper
  seco-cec: decrement HDMI device refcount
  cros-ec-cec: decrement HDMI device refcount

 drivers/media/cec/cec-notifier.c              | 24 +++++++++++++++++++
 .../media/platform/cros-ec-cec/cros-ec-cec.c  |  1 +
 drivers/media/platform/meson/ao-cec.c         | 16 ++++---------
 drivers/media/platform/s5p-cec/s5p_cec.c      | 16 ++++---------
 drivers/media/platform/seco-cec/seco-cec.c    |  1 +
 drivers/media/platform/sti/cec/stih-cec.c     | 21 ++++++----------
 drivers/media/platform/tegra-cec/tegra_cec.c  | 14 ++++-------
 include/media/cec-notifier.h                  | 19 ++++++++++++++-
 8 files changed, 65 insertions(+), 47 deletions(-)