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@xxxxxxxxxx>
---
drivers/regulator/core.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index a0b52ef11c30..39d05fcc07e9 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1545,6 +1545,7 @@ static int regulator_resolve_supply(struct regulator_dev *rdev)
ret = regulator_enable(rdev->supply);
if (ret < 0) {
_regulator_put(rdev->supply);
+ rdev->supply = NULL;
return ret;
}
}
--
2.1.4
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