This is a note to let you know that I've just added the patch titled
Revert "tty: n_gsm: replace kicktimer with delayed_work"
to the 6.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
revert-tty-n_gsm-replace-kicktimer-with-delayed_work.patch
and it can be found in the queue-6.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit bed94b769d73f6b09ea9a4e8678f7c0541e28472
Author: Fedor Pchelkin <pchelkin@xxxxxxxxx>
Date: Sat Oct 8 14:02:21 2022 +0300
Revert "tty: n_gsm: replace kicktimer with delayed_work"
[ Upstream commit 15743ae50e04aa907131e3ae8d66e9a2964ea232 ]
This reverts commit c9ab053e56ce13a949977398c8edc12e6c02fc95.
The above commit is reverted as it was a prerequisite for tx_mutex
introduction and tx_mutex has been removed as it does not correctly
work in order to protect tx data.
Signed-off-by: Fedor Pchelkin <pchelkin@xxxxxxxxx>
Signed-off-by: Alexey Khoroshilov <khoroshilov@xxxxxxxxx>
Reviewed-by: Daniel Starke <daniel.starke@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20221008110221.13645-3-pchelkin@xxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 3cd6a2c55d9c..ae02aed6bd0c 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -256,7 +256,7 @@ struct gsm_mux {
struct list_head tx_data_list; /* Pending data packets */
/* Control messages */
- struct delayed_work kick_timeout; /* Kick TX queuing on timeout */
+ struct timer_list kick_timer; /* Kick TX queuing on timeout */
struct timer_list t2_timer; /* Retransmit timer for commands */
int cretries; /* Command retry counter */
struct gsm_control *pending_cmd;/* Our current pending command */
@@ -1009,7 +1009,7 @@ static void __gsm_data_queue(struct gsm_dlci *dlci, struct gsm_msg *msg)
gsm->tx_bytes += msg->len;
gsmld_write_trigger(gsm);
- schedule_delayed_work(&gsm->kick_timeout, 10 * gsm->t1 * HZ / 100);
+ mod_timer(&gsm->kick_timer, jiffies + 10 * gsm->t1 * HZ / 100);
}
/**
@@ -1984,16 +1984,16 @@ static void gsm_dlci_command(struct gsm_dlci *dlci, const u8 *data, int len)
}
/**
- * gsm_kick_timeout - transmit if possible
- * @work: work contained in our gsm object
+ * gsm_kick_timer - transmit if possible
+ * @t: timer contained in our gsm object
*
* Transmit data from DLCIs if the queue is empty. We can't rely on
* a tty wakeup except when we filled the pipe so we need to fire off
* new data ourselves in other cases.
*/
-static void gsm_kick_timeout(struct work_struct *work)
+static void gsm_kick_timer(struct timer_list *t)
{
- struct gsm_mux *gsm = container_of(work, struct gsm_mux, kick_timeout.work);
+ struct gsm_mux *gsm = from_timer(gsm, t, kick_timer);
unsigned long flags;
int sent = 0;
@@ -2458,7 +2458,7 @@ static void gsm_cleanup_mux(struct gsm_mux *gsm, bool disc)
}
/* Finish outstanding timers, making sure they are done */
- cancel_delayed_work_sync(&gsm->kick_timeout);
+ del_timer_sync(&gsm->kick_timer);
del_timer_sync(&gsm->t2_timer);
/* Finish writing to ldisc */
@@ -2605,7 +2605,7 @@ static struct gsm_mux *gsm_alloc_mux(void)
kref_init(&gsm->ref);
INIT_LIST_HEAD(&gsm->tx_ctrl_list);
INIT_LIST_HEAD(&gsm->tx_data_list);
- INIT_DELAYED_WORK(&gsm->kick_timeout, gsm_kick_timeout);
+ timer_setup(&gsm->kick_timer, gsm_kick_timer, 0);
timer_setup(&gsm->t2_timer, gsm_control_retransmit, 0);
INIT_WORK(&gsm->tx_work, gsmld_write_task);
init_waitqueue_head(&gsm->event);
