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

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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>
This commit is contained in:
Robert P. J. Day 2007-11-06 03:21:42 -05:00 committed by Mark M. Hoffman
parent 5aebefb086
commit ce9c2f449b
1 changed files with 1 additions and 3 deletions
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4
drivers/hwmon/adt7470.c
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@ -114,8 +114,6 @@ I2C_CLIENT_INSMOD_1(adt7470);
/* sleep 1s while gathering temperature data */ /* sleep 1s while gathering temperature data */
#define TEMP_COLLECTION_TIME 1000 #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 */ /* 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_PERIOD_TO_RPM(x) ((90000 * 60) / (x))
#define FAN_RPM_TO_PERIOD FAN_PERIOD_TO_RPM #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) if (input == ADT7470_PWM_ALL_TEMPS)
return 0; return 0;
if (input < 1 || !power_of_2(input)) if (input < 1 || !is_power_of_2(input))
return -EINVAL; return -EINVAL;
return ilog2(input) + 1; return ilog2(input) + 1;
} }