6.9-stable review patch. If anyone has any objections, please let me know.
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From: Javier Carrasco javier.carrasco.cruz@gmail.com
commit a94ff8e50c20bde6d50864849a98b106e45d30c6 upstream.
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_scop... Signed-off-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/hwmon/ltc2992.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/hwmon/ltc2992.c +++ b/drivers/hwmon/ltc2992.c @@ -876,9 +876,11 @@ static int ltc2992_parse_dt(struct ltc29
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; } }