[PATCH v2 0/4] ASoC: cancel pending delayed works on codec removal

[Tristan Madani <tristmd@gmail.com>]

Several ASoC codec drivers schedule delayed works for jack detection but
do not cancel them in the component remove callback.  If the device is
unbound while a work is pending or the IRQ fires shortly before removal,
the work handler can execute after resources are freed.

This series adds cancel_delayed_work_sync() calls in the remove (and
where applicable, probe error) paths of four affected codecs:

  1/4 rt5668 - jack_detect_work not cancelled on remove
  2/4 rt5659 - jack_detect_work not cancelled; INIT_DELAYED_WORK is
               conditional on jd_src, so a guard flag is needed
  3/4 twl6040 - hs_jack.work not cancelled before free_irq
  4/4 wm8994 - multiple delayed works (jackdet_bootstrap, mic_work,
               mic_complete_work, open_circuit_work) not cancelled

Changes in v2:
- Resend as unified series per Mark Brown request (previously sent as
  individual patches with inflated version numbers)
- wm8994: cancel mic_work both before and after jackdet_bootstrap to
  handle cyclic re-arming (mic_work -> DAPM -> jackdet_bootstrap ->
  jack detect -> mic_work)
- rt5659: unchanged from prior version (jack_detect_work_inited flag
  per Mark Brown feedback)

Tristan Madani (4):
  ASoC: rt5668: cancel jack_detect_work on component removal
  ASoC: rt5659: cancel jack_detect_work on component removal
  ASoC: twl6040: cancel headset jack work on component removal
  ASoC: wm8994: drain delayed works on remove and probe error

 sound/soc/codecs/rt5659.c  | 20 +++++++++++++++++++-
 sound/soc/codecs/rt5659.h  |  3 +++
 sound/soc/codecs/rt5668.c  |  2 ++
 sound/soc/codecs/twl6040.c |  1 +
 sound/soc/codecs/wm8994.c  | 14 ++++++++++++++
 5 files changed, 39 insertions(+), 1 deletion(-)

-- 
2.47.3