hwmon: (nct6775) Fix incorrect parenthesization in nct6775_write_fan_div()

commit 2fbb848b65cde5b876cce52ebcb34de4aaa5a94a upstream.

Commit 4ef2774511dc ("hwmon: (nct6775) Convert register access to
regmap API") fumbled the shifting & masking of the fan_div values such
that odd-numbered fan divisors would always be set to zero.  Fix it so
that we actually OR in the bits we meant to.

Signed-off-by: Zev Weiss <zev@bewilderbeest.net>
Fixes: 4ef2774511dc ("hwmon: (nct6775) Convert register access to regmap API")
Cc: stable@kernel.org # v5.19+
Link: https://lore.kernel.org/r/20230102212857.5670-1-zev@bewilderbeest.net
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/hwmon/nct6775-core.c b/drivers/hwmon/nct6775-core.c
index da9ec69..c54233f 100644 (file)
--- a/drivers/hwmon/nct6775-core.c
+++ b/drivers/hwmon/nct6775-core.c
@@ -1150,7 +1150,7 @@ static int nct6775_write_fan_div(struct nct6775_data *data, int nr)
        if (err)
                return err;
        reg &= 0x70 >> oddshift;
-       reg |= data->fan_div[nr] & (0x7 << oddshift);
+       reg |= (data->fan_div[nr] & 0x7) << oddshift;
        return nct6775_write_value(data, fandiv_reg, reg);
 }