diff options
| author | Jiri Slaby <jslaby@suse.cz> | 2021-03-02 09:21:48 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-10 11:34:07 +0300 |
| commit | 51f62a311c6d34b9529448271bb34e705cc5868f (patch) | |
| tree | 3458ef3a96772e740193877c0162b6e6a7e1f774 /drivers/s390 | |
| parent | 11771e0bf13c9fefc31481a4ebc9271b4d495892 (diff) | |
| download | linux-51f62a311c6d34b9529448271bb34e705cc5868f.tar.xz | |
tty: con3215, remove tasklet for tty_wakeup
tty_wakeup is safe to be called from all contexts. No need to schedule
a tasklet for that. Let us call it directly like in other drivers.
And delete the tasklet completely.
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: linux390@de.ibm.com
Cc: linux-s390@vger.kernel.org
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20210302062214.29627-18-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/char/con3215.c | 20 |
1 files changed, 1 insertions, 19 deletions
diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c index 671efee612af..5923a1f133ef 100644 --- a/drivers/s390/char/con3215.c +++ b/drivers/s390/char/con3215.c @@ -85,7 +85,6 @@ struct raw3215_info { int written; /* number of bytes in write requests */ struct raw3215_req *queued_read; /* pointer to queued read requests */ struct raw3215_req *queued_write;/* pointer to queued write requests */ - struct tasklet_struct tlet; /* tasklet to invoke tty_wakeup */ wait_queue_head_t empty_wait; /* wait queue for flushing */ struct timer_list timer; /* timer for delayed output */ int line_pos; /* position on the line (for tabs) */ @@ -330,21 +329,6 @@ static inline void raw3215_try_io(struct raw3215_info *raw) } /* - * Call tty_wakeup from tasklet context - */ -static void raw3215_wakeup(unsigned long data) -{ - struct raw3215_info *raw = (struct raw3215_info *) data; - struct tty_struct *tty; - - tty = tty_port_tty_get(&raw->port); - if (tty) { - tty_wakeup(tty); - tty_kref_put(tty); - } -} - -/* * Try to start the next IO and wake up processes waiting on the tty. */ static void raw3215_next_io(struct raw3215_info *raw, struct tty_struct *tty) @@ -352,7 +336,7 @@ static void raw3215_next_io(struct raw3215_info *raw, struct tty_struct *tty) raw3215_mk_write_req(raw); raw3215_try_io(raw); if (tty && RAW3215_BUFFER_SIZE - raw->count >= RAW3215_MIN_SPACE) - tasklet_schedule(&raw->tlet); + tty_wakeup(tty); } /* @@ -644,7 +628,6 @@ static struct raw3215_info *raw3215_alloc_info(void) timer_setup(&info->timer, raw3215_timeout, 0); init_waitqueue_head(&info->empty_wait); - tasklet_init(&info->tlet, raw3215_wakeup, (unsigned long)info); tty_port_init(&info->port); return info; @@ -936,7 +919,6 @@ static void tty3215_close(struct tty_struct *tty, struct file * filp) tty->closing = 1; /* Shutdown the terminal */ raw3215_shutdown(raw); - tasklet_kill(&raw->tlet); tty->closing = 0; tty_port_tty_set(&raw->port, NULL); } |