[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>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/sound/timer.h b/include/sound/timer.h
index 1898511a0f38..b55f38ae56e1 100644
--- a/include/sound/timer.h
+++ b/include/sound/timer.h
@@ -88,6 +88,7 @@ struct _snd_timer_hardware {
 struct _snd_timer {
         snd_timer_class_t tmr_class;
         snd_card_t *card;
+        struct module *module;
         int tmr_device;
         int tmr_subdevice;
         char id[64];