From b910043b96dd3c4bfd50c8a328cb0cf582a63ca2 Mon Sep 17 00:00:00 2001 From: Tony O'Brien Date: Wed, 22 Feb 2023 13:52:28 +1300 Subject: [PATCH] hwmon: (adt7475) Fix masking of hysteresis registers [ Upstream commit 20d6d4f83b84659632dafe7982bcef330bb50f1c ] The wrong bits are masked in the hysteresis register; indices 0 and 2 should zero bits [7:4] and preserve bits [3:0], and index 1 should zero bits [3:0] and preserve bits [7:4]. Fixes: 9710f8bd109c ("hwmon: Add a driver for the ADT7475 hardware monitoring chip") Signed-off-by: Tony O'Brien Link: https://lore.kernel.org/r/20230222005228.158661-3-tony.obrien@alliedtelesis.co.nz Signed-off-by: Guenter Roeck Signed-off-by: Sasha Levin --- drivers/hwmon/adt7475.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/hwmon/adt7475.c b/drivers/hwmon/adt7475.c index 77222c35a38ec..6e4c92b500b8e 100644 --- a/drivers/hwmon/adt7475.c +++ b/drivers/hwmon/adt7475.c @@ -488,10 +488,10 @@ static ssize_t temp_store(struct device *dev, struct device_attribute *attr, val = (temp - val) / 1000; if (sattr->index != 1) { - data->temp[HYSTERSIS][sattr->index] &= 0xF0; + data->temp[HYSTERSIS][sattr->index] &= 0x0F; data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4; } else { - data->temp[HYSTERSIS][sattr->index] &= 0x0F; + data->temp[HYSTERSIS][sattr->index] &= 0xF0; data->temp[HYSTERSIS][sattr->index] |= (val & 0xF); } -- 2.39.5