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| author | Robert P. J. Day <rpjday@crashcourse.ca> | 2008-02-06 10:38:42 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-06 19:41:13 +0100 |
| commit | 9974b6ea7b85a32f34f824443f47aa501c85ee8f (patch) | |
| tree | 9ba16c56565ea083b663547f4c1c54c3feb87682 /drivers/rtc | |
| parent | rtc-pcf8583: Don't abuse I2C_M_NOSTART (diff) | |
| download | linux-9974b6ea7b85a32f34f824443f47aa501c85ee8f.tar.xz linux-9974b6ea7b85a32f34f824443f47aa501c85ee8f.zip | |
rtc-s3c: Use is_power_of_2() macro for simplicity.
Use is_power_of_2() macro for simplicity.
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/rtc-s3c.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c index e2041b4d0c85..86766f1f2496 100644 --- a/drivers/rtc/rtc-s3c.c +++ b/drivers/rtc/rtc-s3c.c @@ -20,6 +20,7 @@ #include <linux/rtc.h> #include <linux/bcd.h> #include <linux/clk.h> +#include <linux/log2.h> #include <asm/hardware.h> #include <asm/uaccess.h> @@ -309,9 +310,7 @@ static int s3c_rtc_ioctl(struct device *dev, break; case RTC_IRQP_SET: - /* check for power of 2 */ - - if ((arg & (arg-1)) != 0 || arg < 1) { + if (!is_power_of_2(arg)) { ret = -EINVAL; goto exit; } |