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[ALSA] timers: add module refcounting for global timers

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Modules: RTC timer driver,Timer Midlevel

Add a module pointer to the timer structure and use it for refcounting
instead of the card's module pointer to prevent the global timer
modules (rtctimer and hpetimer) from being removed while in use.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
This commit is contained in:
Clemens Ladisch
2005-10-12 17:12:31 +02:00
committed by Jaroslav Kysela
parent 2fd43d1159
commit de24214d0c
3 changed files with 8 additions and 4 deletions
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4
sound/core/rtctimer.c
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@ -124,7 +124,8 @@ static int __init rtctimer_init(void)
if (rtctimer_freq < 2 || rtctimer_freq > 8192 ||
(rtctimer_freq & (rtctimer_freq - 1)) != 0) {
snd_printk(KERN_ERR "rtctimer: invalid frequency %d\n", rtctimer_freq);
snd_printk(KERN_ERR "rtctimer: invalid frequency %d\n",
rtctimer_freq);
return -EINVAL;
}
@ -133,6 +134,7 @@ static int __init rtctimer_init(void)
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;