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hwmon: (ltc2992) Fix memory leak in ltc2992_parse_dt()

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A new error path was added to the fwnode_for_each_available_node() loop
in ltc2992_parse_dt(), which leads to an early return that requires a
call to fwnode_handle_put() to avoid a memory leak in that case.

Add the missing fwnode_handle_put() in the error path from a zero value
shunt resistor.

Cc: stable@vger.kernel.org
Fixes: 10b029020487 ("hwmon: (ltc2992) Avoid division by zero")
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://lore.kernel.org/r/20240523-fwnode_for_each_available_child_node_scoped-v2-1-701f3a03f2fb@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Javier Carrasco 2024-05-23 17:47:14 +02:00 committed by Guenter Roeck
parent fa0bc8f297
commit a94ff8e50c
1 changed files with 3 additions and 1 deletions
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4
drivers/hwmon/ltc2992.c
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@ -876,9 +876,11 @@ static int ltc2992_parse_dt(struct ltc2992_state *st)
ret = fwnode_property_read_u32(child, "shunt-resistor-micro-ohms", &val);
if (!ret) {
if (!val)
if (!val) {
fwnode_handle_put(child);
return dev_err_probe(&st->client->dev, -EINVAL,
"shunt resistor value cannot be zero\n");
}
st->r_sense_uohm[addr] = val;
}
}