diff options
| author | Martin Fuzzey <martin.fuzzey@flowbird.group> | 2023-06-16 16:36:28 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2023-07-17 06:15:18 +0100 |
| commit | 98e2dd5f7a8be5cb2501a897e96910393a49f0ff (patch) | |
| tree | 8ee47ea81581ac841f4c89a76def12b898454e7e /drivers/regulator | |
| parent | fdf0eaf11452d72945af31804e2a1048ee1b574c (diff) | |
regulator: da9063: fix null pointer deref with partial DT config
When some of the da9063 regulators do not have corresponding DT nodes
a null pointer dereference occurs on boot because such regulators have
no init_data causing the pointers calculated in
da9063_check_xvp_constraints() to be invalid.
Do not dereference them in this case.
Fixes: b8717a80e6ee ("regulator: da9063: implement setter for voltage monitoring")
Signed-off-by: Martin Fuzzey <martin.fuzzey@flowbird.group>
Link: https://lore.kernel.org/r/20230616143736.2946173-1-martin.fuzzey@flowbird.group
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/da9063-regulator.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/regulator/da9063-regulator.c b/drivers/regulator/da9063-regulator.c index c5dd77be558b..dfd5ec9f75c9 100644 --- a/drivers/regulator/da9063-regulator.c +++ b/drivers/regulator/da9063-regulator.c @@ -778,6 +778,9 @@ static int da9063_check_xvp_constraints(struct regulator_config *config) const struct notification_limit *uv_l = &constr->under_voltage_limits; const struct notification_limit *ov_l = &constr->over_voltage_limits; + if (!config->init_data) /* No config in DT, pointers will be invalid */ + return 0; + /* make sure that only one severity is used to clarify if unchanged, enabled or disabled */ if ((!!uv_l->prot + !!uv_l->err + !!uv_l->warn) > 1) { dev_err(config->dev, "%s: at most one voltage monitoring severity allowed!\n", |