*/
static int __init rtctimer_init(void)
{
- int order, err;
+ int err;
snd_timer_t *timer;
- if (rtctimer_freq < 2 || rtctimer_freq > 8192) {
- snd_printk(KERN_ERR "rtctimer: invalid frequency %d\n", rtctimer_freq);
- return -EINVAL;
- }
- for (order = 1; rtctimer_freq > order; order <<= 1)
- ;
- if (rtctimer_freq != order) {
- snd_printk(KERN_ERR "rtctimer: invalid frequency %d\n", rtctimer_freq);
+ if (rtctimer_freq < 2 || rtctimer_freq > 8192 ||
+ (rtctimer_freq & (rtctimer_freq - 1)) != 0) {
+ snd_printk(KERN_ERR "rtctimer: invalid frequency %d\n",
+ rtctimer_freq);
return -EINVAL;
}
if (err < 0)
return err;
+ timer->module = THIS_MODULE;
strcpy(timer->name, "RTC timer");
timer->hw = rtc_hw;
timer->hw.resolution = NANO_SEC / rtctimer_freq;