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| author | Stephen Warren | 2012-08-23 20:19:18 +0200 |
|---|---|---|
| committer | Mark Brown | 2012-08-28 20:00:30 +0200 |
| commit | 5fc72f57e62e10d9d8347ae20f13820d811377da (patch) | |
| tree | f47209456bf767af3660bd727a5459fd79274fc2 /drivers/regulator/max8907-regulator.c | |
| parent | regulator: fix kernel-doc warnings in drivers/regulator/core.c (diff) | |
| download | kernel-qcow2-linux-5fc72f57e62e10d9d8347ae20f13820d811377da.tar.gz kernel-qcow2-linux-5fc72f57e62e10d9d8347ae20f13820d811377da.tar.xz kernel-qcow2-linux-5fc72f57e62e10d9d8347ae20f13820d811377da.zip | |
regulator: max8907: fix use of possibly NULL idata
If a regulator is not used by a board, it's quite legitimate not to
provide platform data or a device tree node to configure it (i.e.
regulator_init_data). In that case, during MAX8907 regulator's
probe(), the idata variable will be NULL for that regulator. Prevent
dereferincing it.
If the MBATT regulator's init_data is not specified, or no name was
specified in the constraints, the regulator will be named based on
the regulator descriptor, so initialize mbatt_rail_name from there.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/regulator/max8907-regulator.c')
| -rw-r--r-- | drivers/regulator/max8907-regulator.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/regulator/max8907-regulator.c b/drivers/regulator/max8907-regulator.c index 3a5104f6eed4..e97af8ef3aea 100644 --- a/drivers/regulator/max8907-regulator.c +++ b/drivers/regulator/max8907-regulator.c @@ -323,7 +323,10 @@ static __devinit int max8907_regulator_probe(struct platform_device *pdev) switch (pmic->desc[i].id) { case MAX8907_MBATT: - mbatt_rail_name = idata->constraints.name; + if (idata && idata->constraints.name) + mbatt_rail_name = idata->constraints.name; + else + mbatt_rail_name = pmic->desc[i].name; break; case MAX8907_BBAT: case MAX8907_SDBY: |