Commit bca6a1ad authored Jan 18, 2015 by Guenter Roeck

hwmon: (jc42) Use sign_extend32 for sign extension



Despite the name, sign_extend32 works just fine for 16 bit variables,
so it is safe to use.

Cc: Martin Kepplinger <martink@posteo.de>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

parent add513be

drivers/hwmon/jc42.c

+1 −5

Original line number	Diff line number	Diff line
		@@ -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;