Messages in this thread Patch in this message | | | Date | Fri, 04 Nov 2022 01:41:09 -0400 | From | Steven Rostedt <> | Subject | [RFC][PATCH v3 16/33] timers: mISDN: Use timer_shutdown_sync() before freeing timer |
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From: "Steven Rostedt (Google)" <rostedt@goodmis.org>
Before a timer is freed, timer_shutdown_sync() must be called, or at least timer_shutdown() (where sync is not possible in the context).
Link: https://lore.kernel.org/all/20220407161745.7d6754b3@gandalf.local.home/
Cc: Karsten Keil <isdn@linux-pingi.de> Cc: netdev@vger.kernel.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> --- drivers/isdn/hardware/mISDN/hfcmulti.c | 6 ++---- drivers/isdn/mISDN/l1oip_core.c | 4 ++-- drivers/isdn/mISDN/timerdev.c | 4 ++-- 3 files changed, 6 insertions(+), 8 deletions(-)
diff --git a/drivers/isdn/hardware/mISDN/hfcmulti.c b/drivers/isdn/hardware/mISDN/hfcmulti.c index 4f7eaa17fb27..9c15c2c30e88 100644 --- a/drivers/isdn/hardware/mISDN/hfcmulti.c +++ b/drivers/isdn/hardware/mISDN/hfcmulti.c @@ -4543,10 +4543,8 @@ release_port(struct hfc_multi *hc, struct dchannel *dch) spin_lock_irqsave(&hc->lock, flags); - if (dch->timer.function) { - del_timer(&dch->timer); - dch->timer.function = NULL; - } + if (dch->timer.function) + timer_shutdown(&dch->timer); if (hc->ctype == HFC_TYPE_E1) { /* E1 */ /* remove sync */ diff --git a/drivers/isdn/mISDN/l1oip_core.c b/drivers/isdn/mISDN/l1oip_core.c index a77195e378b7..182e3f489c60 100644 --- a/drivers/isdn/mISDN/l1oip_core.c +++ b/drivers/isdn/mISDN/l1oip_core.c @@ -1236,8 +1236,8 @@ release_card(struct l1oip *hc) hc->shutdown = true; - del_timer_sync(&hc->keep_tl); - del_timer_sync(&hc->timeout_tl); + timer_shutdown_sync(&hc->keep_tl); + timer_shutdown_sync(&hc->timeout_tl); cancel_work_sync(&hc->workq); diff --git a/drivers/isdn/mISDN/timerdev.c b/drivers/isdn/mISDN/timerdev.c index abdf36ac3bee..83d6b484d3c6 100644 --- a/drivers/isdn/mISDN/timerdev.c +++ b/drivers/isdn/mISDN/timerdev.c @@ -74,7 +74,7 @@ mISDN_close(struct inode *ino, struct file *filep) while (!list_empty(list)) { timer = list_first_entry(list, struct mISDNtimer, list); spin_unlock_irq(&dev->lock); - del_timer_sync(&timer->tl); + timer_shutdown_sync(&timer->tl); spin_lock_irq(&dev->lock); /* it might have been moved to ->expired */ list_del(&timer->list); @@ -204,7 +204,7 @@ misdn_del_timer(struct mISDNtimerdev *dev, int id) list_del_init(&timer->list); timer->id = -1; spin_unlock_irq(&dev->lock); - del_timer_sync(&timer->tl); + timer_shutdown_sync(&timer->tl); kfree(timer); return id; } -- 2.35.1
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