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| author | Ashay Jaiswal <ashayj@codeaurora.org> | 2015-01-08 18:54:25 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-02-05 22:35:37 -0800 |
| commit | f256de7d38a3a5ca68ab105cf8794fe2ec21e83a (patch) | |
| tree | 27222d8168b3fa484b56fa5bc69d02619bee2051 /kernel/sysctl_binary.c | |
| parent | ba455124c34d113bf781bfb2c1416d33cb1f26ce (diff) | |
regulator: core: fix race condition in regulator_put()
commit 83b0302d347a49f951e904184afe57ac3723476e upstream.
The regulator framework maintains a list of consumer regulators
for a regulator device and protects it from concurrent access using
the regulator device's mutex lock.
In the case of regulator_put() the consumer is removed and regulator
device's parameters are updated without holding the regulator device's
mutex. This would lead to a race condition between the regulator_put()
and any function which traverses the consumer list or modifies regulator
device's parameters.
Fix this race condition by holding the regulator device's mutex in case
of regulator_put.
Signed-off-by: Ashay Jaiswal <ashayj@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/sysctl_binary.c')
0 files changed, 0 insertions, 0 deletions