regulator: core: Clear the supply pointer if enabling fails
authorJon Hunter <jonathanh@nvidia.com>
Thu, 21 Apr 2016 16:11:58 +0000 (17:11 +0100)
committerMark Brown <broonie@kernel.org>
Fri, 22 Apr 2016 10:35:54 +0000 (11:35 +0100)
commit8e5356a73604f53da6a1e0756727cb8f9f7bba17
tree01416c461a8b1d55b19ddff861bcb7af849738f4
parent7ddede6a58a0bd26efcfd2a5055611195411f514
regulator: core: Clear the supply pointer if enabling fails

During the resolution of a regulator's supply, we may attempt to enable
the supply if the regulator itself is already enabled. If enabling the
supply fails, then we will call _regulator_put() for the supply.
However, the pointer to the supply has not been cleared for the
regulator and this will cause a crash if we then unregister the
regulator and attempt to call regulator_put() a second time for the
supply. Fix this by clearing the supply pointer if enabling the supply
after fails when resolving the supply for a regulator.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
drivers/regulator/core.c