hwmon: (ltc2992) Avoid division by zero
Do not allow setting shunt resistor to 0. This results in a division by zero when performing current value computations based on input voltages and connected resistor values. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231011135754.13508-1-antoniu.miclaus@analog.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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@ -875,8 +875,12 @@ static int ltc2992_parse_dt(struct ltc2992_state *st)
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}
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ret = fwnode_property_read_u32(child, "shunt-resistor-micro-ohms", &val);
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if (!ret)
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if (!ret) {
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if (!val)
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return dev_err_probe(&st->client->dev, -EINVAL,
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"shunt resistor value cannot be zero\n");
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st->r_sense_uohm[addr] = val;
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}
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}
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return 0;
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