audio: Fix panic on add_timer [1/1]

PD#TV-7920

Problem:
Audio drive caused kernel panic.
BUG_ON timer_pending.

Solution:
Add timer will panic calling add_timer.
If timer is pending we need use mod_timer
to deal with this case.

Verify:
T962

Change-Id: Ib4143de384af40803609c3513ad07eeb3fe59bbf
Signed-off-by: Shuai Li <shuai.li@amlogic.com>

diff --git a/sound/soc/amlogic/meson/i2s.c b/sound/soc/amlogic/meson/i2s.c
index 461fe03..c562c15 100644 (file)
--- a/sound/soc/amlogic/meson/i2s.c
+++ b/sound/soc/amlogic/meson/i2s.c
@@ -463,8 +463,7 @@ static void start_timer(struct aml_runtime_data *prtd)
                hrtimer_start(&prtd->hrtimer, prtd->wakeups_per_second,
                                  HRTIMER_MODE_REL);
 #else
-               prtd->timer.expires = jiffies + 1;
-               add_timer(&prtd->timer);
+               mod_timer(&prtd->timer, jiffies + 1);
 #endif
 #endif
                prtd->active = 1;