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| author | AngeloGioacchino Del Regno <kholk11@gmail.com> | 2020-09-26 15:55:43 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-10-01 23:25:21 +0300 |
| commit | e9bb4a068b206f61ef01057cfeafdb852fb244c5 (patch) | |
| tree | 3b1723ec4277ff0f1be224f6109192cb575c6491 /drivers/regulator/core.c | |
| parent | bd8e2cad4e2857a8f3d1098236847e5b4becb3b9 (diff) | |
| download | linux-e9bb4a068b206f61ef01057cfeafdb852fb244c5.tar.xz | |
regulator: core: Enlarge max OF property name length to 64 chars
Some regulator drivers may be defining very long names: this is the
case with the qcom_smd and qcom_spmi regulators, where we need to
parse the regulator parents from DT.
For clarity, this is an example:
{ "l13a", QCOM_SMD_RPM_LDOA, 13, &pm660_ht_lvpldo,
"vdd_l8_l9_l10_l11_l12_l13_l14" },
pm660-regulators {
...
vdd_l8_l9_l10_l11_l12_l13_l14-supply = <&vreg_s4a_2p04>
...
};
Now, with a 32 characters limit, the function is trying to parse,
exactly, "vdd_l8_l9_l10_l11_l12_l13_l14-s" (32 chars) instead of
the right one, which is 37 chars long in this specific case.
... And this is not only the case with PM660/PM660L, but also with
PMA8084, PM8916, PM8950 and others that are not implemented yet.
The length of 64 chars was chosen based on the longest parsed property
name that I could find, which is in PM8916, and would be 53 characters
long.
At that point, rounding that to 64 looked like being the best idea.
Signed-off-by: AngeloGioacchino Del Regno <kholk11@gmail.com>
Link: https://lore.kernel.org/r/20200926125549.13191-2-kholk11@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator/core.c')
| -rw-r--r-- | drivers/regulator/core.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 9f704a6c4802..16497192e99b 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -404,11 +404,11 @@ err_node_put: static struct device_node *of_get_regulator(struct device *dev, const char *supply) { struct device_node *regnode = NULL; - char prop_name[32]; /* 32 is max size of property name */ + char prop_name[64]; /* 64 is max size of property name */ dev_dbg(dev, "Looking up %s-supply from device tree\n", supply); - snprintf(prop_name, 32, "%s-supply", supply); + snprintf(prop_name, 64, "%s-supply", supply); regnode = of_parse_phandle(dev->of_node, prop_name, 0); if (!regnode) { |