[ALSA] timers: add module refcounting for global timers
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>
diff --git a/sound/core/rtctimer.c b/sound/core/rtctimer.c
index 8762ff8..c3c1856 100644
--- a/sound/core/rtctimer.c
+++ b/sound/core/rtctimer.c
@@ -124,7 +124,8 @@
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 @@
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;