hwmon: (w83627ehf) Fix underflows seen when writing limit attributes
[ Upstream commit 5c1de37969b7bc0abcb20b86e91e70caebbd4f89 ] DIV_ROUND_CLOSEST() after kstrtol() results in an underflow if a large negative number such as -9223372036854775808 is provided by the user. Fix it by reordering clamp_val() and DIV_ROUND_CLOSEST() operations. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Sasha Levin <sashal@kernel.org>
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Родитель
02bb3b4c7d
Коммит
cc4be794c8
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@ -895,7 +895,7 @@ store_target_temp(struct device *dev, struct device_attribute *attr,
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if (err < 0)
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if (err < 0)
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return err;
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return err;
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val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), 0, 127);
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val = DIV_ROUND_CLOSEST(clamp_val(val, 0, 127000), 1000);
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mutex_lock(&data->update_lock);
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mutex_lock(&data->update_lock);
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data->target_temp[nr] = val;
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data->target_temp[nr] = val;
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@ -920,7 +920,7 @@ store_tolerance(struct device *dev, struct device_attribute *attr,
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return err;
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return err;
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/* Limit the temp to 0C - 15C */
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/* Limit the temp to 0C - 15C */
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val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), 0, 15);
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val = DIV_ROUND_CLOSEST(clamp_val(val, 0, 15000), 1000);
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mutex_lock(&data->update_lock);
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mutex_lock(&data->update_lock);
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reg = w83627ehf_read_value(data, W83627EHF_REG_TOLERANCE[nr]);
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reg = w83627ehf_read_value(data, W83627EHF_REG_TOLERANCE[nr]);
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