From: Tony O'Brien <tony.obrien@alliedtelesis.co.nz>
Date: Wed, 22 Feb 2023 13:52:28 +1300
Subject: [PATCH] hwmon: (adt7475) Fix masking of hysteresis registers
References: bsc#1012628
Patch-mainline: 6.2.8
Git-commit: 48e8186870d9d0902e712d601ccb7098cb220688
[ Upstream commit 48e8186870d9d0902e712d601ccb7098cb220688 ]
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: 1c301fc5394f ("hwmon: Add a driver for the ADT7475 hardware monitoring chip")
Signed-off-by: Tony O'Brien <tony.obrien@alliedtelesis.co.nz>
Link: https://lore.kernel.org/r/20230222005228.158661-3-tony.obrien@alliedtelesis.co.nz
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
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 77222c35..6e4c92b5 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);
}
--
2.35.3