Signed-off-by: Martin Kepplinger <mart...@posteo.de>
Reviewed-by: Guenter Roeck <li...@roeck-us.net>
---
drivers/hwmon/jc42.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/hwmon/jc42.c b/drivers/hwmon/jc42.c
index 388f8bc..d0582a3 100644
--- a/drivers/hwmon/jc42.c
+++ b/drivers/hwmon/jc42.c
@@ -31,6 +31,7 @@
#include <linux/hwmon-sysfs.h>
#include <linux/err.h>
#include <linux/mutex.h>
+#include <linux/bitops.h>
/* Addresses to scan */
static const unsigned short normal_i2c[] = {
@@ -213,11 +214,7 @@ static u16 jc42_temp_to_reg(int temp, bool extended)
static int jc42_temp_from_reg(s16 reg)
{
- reg &= 0x1fff;
-
- /* sign extend register */
- if (reg & 0x1000)
- reg |= 0xf000;
+ reg = sign_extend16(reg, 12);
/* convert from 0.0625 to 0.001 resolution */
return reg * 125 / 2;
--
2.1.4
--
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