diff mbox series

[v2,2/2] hwmon: (adt7475) Fix masking of hysteresis registers

Message ID 20230222005228.158661-3-tony.obrien@alliedtelesis.co.nz (mailing list archive)
State Accepted
Headers show
Series hwmon: (adt7475) Fixes for acoustics and hysteresis | expand

Commit Message

Tony O'Brien Feb. 22, 2023, 12:52 a.m. UTC
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>
---
Changes in v2:
- Patch headline changed.
- Removed erroneous fix for clamping the hysteresis value. It should be
  an absolute value and not a relative value.
 drivers/hwmon/adt7475.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Guenter Roeck Feb. 25, 2023, 3:03 p.m. UTC | #1
On Wed, Feb 22, 2023 at 01:52:28PM +1300, Tony O'Brien wrote:
> 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>

Applied.

Thanks,
Guenter
diff mbox series

Patch

diff --git a/drivers/hwmon/adt7475.c b/drivers/hwmon/adt7475.c
index 77222c35a38e..6e4c92b500b8 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);
 		}