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hwmon: (jc42) Use sign_extend32 for sign extension
[uclinux-h8/linux.git]
/
drivers
/
hwmon
/
jc42.c
diff --git
a/drivers/hwmon/jc42.c
b/drivers/hwmon/jc42.c
index
388f8bc
..
262d808
100644
(file)
--- a/
drivers/hwmon/jc42.c
+++ b/
drivers/hwmon/jc42.c
@@
-213,11
+213,7
@@
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_extend32(reg, 12);
/* convert from 0.0625 to 0.001 resolution */
return reg * 125 / 2;