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regulator: Remove pointer table overallocation

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The code allocates sizeof(regulator_dev) for a pointer. Make it less
generous. Let kcalloc() calculate the size, while at it.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Link: https://lore.kernel.org/r/407fbd06a02caf038a9ba3baa51c7d6d47cd6517.1597000795.git.mirq-linux@rere.qmqm.pl
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Michał Mirosław 2020-08-09 21:21:16 +02:00 committed by Mark Brown
parent aedf7451e7
commit 7d8196641e
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1 changed files with 5 additions and 5 deletions
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10
drivers/regulator/core.c
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@ -5030,20 +5030,20 @@ static void regulator_remove_coupling(struct regulator_dev *rdev)
static int regulator_init_coupling(struct regulator_dev *rdev)
{
struct regulator_dev **coupled;
int err, n_phandles;
size_t alloc_size;
if (!IS_ENABLED(CONFIG_OF))
n_phandles = 0;
else
n_phandles = of_get_n_coupled(rdev);
alloc_size = sizeof(*rdev) * (n_phandles + 1);
rdev->coupling_desc.coupled_rdevs = kzalloc(alloc_size, GFP_KERNEL);
if (!rdev->coupling_desc.coupled_rdevs)
coupled = kcalloc(n_phandles + 1, sizeof(*coupled), GFP_KERNEL);
if (!coupled)
return -ENOMEM;
rdev->coupling_desc.coupled_rdevs = coupled;
/*
* Every regulator should always have coupling descriptor filled with
* at least pointer to itself.