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author | Thierry Reding <treding@nvidia.com> | 2015-12-02 18:54:50 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-04-12 19:08:31 +0300 |
commit | b1999fa6e8145305a6c8bda30ea20783717708e6 (patch) | |
tree | 994f6f98576a9bcabff3bd738943e99feceeb273 /sound | |
parent | 4c8fe4f52755d4690a745f4e56b543c51add86fe (diff) | |
download | linux-b1999fa6e8145305a6c8bda30ea20783717708e6.tar.xz |
regulator: core: Fix nested locking of supplies
commit 70a7fb80e85ae7f78f8e90cec3fbd862ea6a4d4b upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound')
0 files changed, 0 insertions, 0 deletions