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| author | Thierry Reding <treding@nvidia.com> | 2015-12-02 16:54:50 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-12-02 17:22:10 +0000 |
| commit | 70a7fb80e85ae7f78f8e90cec3fbd862ea6a4d4b (patch) | |
| tree | 4142e78c55ab9dec86d03d6820cda69ffd04a647 /drivers/regulator/wm831x-ldo.c | |
| parent | 49a6bb7a1c0963f260e4b0dcc2c0e56ec65a28b2 (diff) | |
| download | linux-70a7fb80e85ae7f78f8e90cec3fbd862ea6a4d4b.tar.gz | |
regulator: core: Fix nested locking of supplies
Commit fa731ac7ea04 ("regulator: core: avoid unused variable warning")
introduced a subtle change in how supplies are locked. Where previously
code was always locking the regulator of the current iteration, the new
implementation only locks the regulator if it has a supply. For any
given power tree that means that the root will never get locked.
On the other hand the regulator_unlock_supply() will still release all
the locks, which in turn causes the lock debugging code to warn about a
mutex being unlocked which wasn't locked.
Cc: Mark Brown <broonie@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Fixes: Fixes: fa731ac7ea04 ("regulator: core: avoid unused variable warning")
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator/wm831x-ldo.c')
0 files changed, 0 insertions, 0 deletions