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Subject[PATCH 00/13] Fix backtrace warnings from bad notifier chain calls

Hi Mark,

This patch-set fixes a WARN_ON_ONCE() backtrace call caused by not
locking the mutex from the function call regulator_notifier_call_chain().
It does this for thirteen regulator drivers by adding a mutex lock
surrounding the notifier calls.

This missing mutex lock has been around for a while, but the API I have
used used here to fix it (i.e. regulator_lock()/regulator_unlock()) has
only been in the kernel since v4.18. Therefore as this fix stands, the
patches do not port back very far in kernel history.

Regards,
Steve


Steve Twiss (13):
regulator: da9055: Fix notifier mutex lock warning
regulator: da9062: Fix notifier mutex lock warning
regulator: da9063: Fix notifier mutex lock warning
regulator: da9211: Fix notifier mutex lock warning
regulator: lp8755: Fix notifier mutex lock warning
regulator: ltc3589: Fix notifier mutex lock warning
regulator: ltc3676: Fix notifier mutex lock warning
regulator: pv88060: Fix notifier mutex lock warning
regulator: pv88080: Fix notifier mutex lock warning
regulator: pv88090: Fix notifier mutex lock warning
regulator: wm831x: Fix notifier mutex lock warning
regulator: wm831x isink: Fix notifier mutex lock warning
regulator: wm831x ldo: Fix notifier mutex lock warning

drivers/regulator/da9055-regulator.c | 2 ++
drivers/regulator/da9062-regulator.c | 2 ++
drivers/regulator/da9063-regulator.c | 5 ++++-
drivers/regulator/da9211-regulator.c | 4 ++++
drivers/regulator/lp8755.c | 15 ++++++++++++---
drivers/regulator/ltc3589.c | 10 ++++++++--
drivers/regulator/ltc3676.c | 10 ++++++++--
drivers/regulator/pv88060-regulator.c | 4 ++++
drivers/regulator/pv88080-regulator.c | 4 ++++
drivers/regulator/pv88090-regulator.c | 4 ++++
drivers/regulator/wm831x-dcdc.c | 4 ++++
drivers/regulator/wm831x-isink.c | 2 ++
drivers/regulator/wm831x-ldo.c | 2 ++
13 files changed, 60 insertions(+), 8 deletions(-)

--
1.9.3

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