hwmon: (adt7470) Replace power-of-two test

Since <linux/log2.h> already supplies a power-of-two test, there's no
point in having this source file redefine it again.

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>

1 files changed, 1 insertions, 3 deletions

diff --git a/drivers/hwmon/adt7470.c b/drivers/hwmon/adt7470.c
index 9810aaa0489..a2155605e31 100644
--- a/drivers/hwmon/adt7470.c
+++ b/drivers/hwmon/adt7470.c
@@ -114,8 +114,6 @@ I2C_CLIENT_INSMOD_1(adt7470);
 /* sleep 1s while gathering temperature data */
 #define TEMP_COLLECTION_TIME    1000
 
-#define power_of_2(x)   (((x) & ((x) - 1)) == 0)
-
 /* datasheet says to divide this number by the fan reading to get fan rpm */
 #define FAN_PERIOD_TO_RPM(x)    ((90000 * 60) / (x))
 #define FAN_RPM_TO_PERIOD       FAN_PERIOD_TO_RPM
@@ -677,7 +675,7 @@ static int cvt_auto_temp(int input)
 {
         if (input == ADT7470_PWM_ALL_TEMPS)
                 return 0;
-        if (input < 1 || !power_of_2(input))
+        if (input < 1 || !is_power_of_2(input))
                 return -EINVAL;
         return ilog2(input) + 1;
 }