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ALSA: timer: Convert timers to use timer_setup()

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In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly. This adds a pointer back to struct
snd_timer.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Kees Cook 2017-10-04 17:53:33 -07:00 committed by Takashi Iwai
parent d522bb6a10
commit 38e9a80f66
1 changed files with 7 additions and 4 deletions
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11
sound/core/timer.c
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@ -1028,15 +1028,17 @@ EXPORT_SYMBOL(snd_timer_global_register);
struct snd_timer_system_private {
struct timer_list tlist;
struct snd_timer *snd_timer;
unsigned long last_expires;
unsigned long last_jiffies;
unsigned long correction;
};
static void snd_timer_s_function(unsigned long data)
static void snd_timer_s_function(struct timer_list *t)
{
struct snd_timer *timer = (struct snd_timer *)data;
struct snd_timer_system_private *priv = timer->private_data;
struct snd_timer_system_private *priv = from_timer(priv, t,
tlist);
struct snd_timer *timer = priv->snd_timer;
unsigned long jiff = jiffies;
if (time_after(jiff, priv->last_expires))
priv->correction += (long)jiff - (long)priv->last_expires;
@ -1118,7 +1120,8 @@ static int snd_timer_register_system(void)
snd_timer_free(timer);
return -ENOMEM;
}
setup_timer(&priv->tlist, snd_timer_s_function, (unsigned long) timer);
priv->snd_timer = timer;
timer_setup(&priv->tlist, snd_timer_s_function, 0);
timer->private_data = priv;
timer->private_free = snd_timer_free_system;
return snd_timer_global_register(timer);