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Commit 1035a9e3 authored by Axel Lin's avatar Axel Lin Committed by Guenter Roeck
Browse files

hwmon: (adm1029) Ensure the fan_div cache is updated in set_fan_div 



Writing to fanX_div does not clear the cache. As a result, reading
from fanX_div may return the old value for up to two seconds
after writing a new value.

This patch ensures the fan_div cache is updated in set_fan_div().

Reported-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarAxel Lin <axel.lin@ingics.com>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent df86754b

drivers/hwmon/adm1029.c

+3 −0
Original line number Diff line number Diff line
@@ -232,6 +232,9 @@ static ssize_t set_fan_div(struct device *dev, 
	/* Update the value */

	reg = (reg & 0x3F) | (val << 6);



	/* Update the cache */

	data->fan_div[attr->index] = reg;



	/* Write value */

	i2c_smbus_write_byte_data(client,

				  ADM1029_REG_FAN_DIV[attr->index], reg);