diff options
Diffstat (limited to 'drivers/s390/char/ctrlchar.c')
| -rw-r--r-- | drivers/s390/char/ctrlchar.c | 28 |
1 files changed, 18 insertions, 10 deletions
diff --git a/drivers/s390/char/ctrlchar.c b/drivers/s390/char/ctrlchar.c index 8de2deb176d7..6f2b64040078 100644 --- a/drivers/s390/char/ctrlchar.c +++ b/drivers/s390/char/ctrlchar.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Unified handling of special chars. * @@ -14,25 +15,32 @@ #include "ctrlchar.h" #ifdef CONFIG_MAGIC_SYSRQ -static int ctrlchar_sysrq_key; +static struct sysrq_work ctrlchar_sysrq; static void ctrlchar_handle_sysrq(struct work_struct *work) { - handle_sysrq(ctrlchar_sysrq_key); + struct sysrq_work *sysrq = container_of(work, struct sysrq_work, work); + + handle_sysrq(sysrq->key); } -static DECLARE_WORK(ctrlchar_work, ctrlchar_handle_sysrq); +void schedule_sysrq_work(struct sysrq_work *sw) +{ + INIT_WORK(&sw->work, ctrlchar_handle_sysrq); + schedule_work(&sw->work); +} #endif /** - * Check for special chars at start of input. + * ctrlchar_handle - check for special chars at start of input + * + * @buf: console input buffer + * @len: length of valid data in buffer + * @tty: the tty struct for this console * - * @param buf Console input buffer. - * @param len Length of valid data in buffer. - * @param tty The tty struct for this console. - * @return CTRLCHAR_NONE, if nothing matched, + * Return: CTRLCHAR_NONE, if nothing matched, * CTRLCHAR_SYSRQ, if sysrq was encountered * otherwise char to be inserted logically or'ed * with CTRLCHAR_CTRL @@ -51,8 +59,8 @@ ctrlchar_handle(const unsigned char *buf, int len, struct tty_struct *tty) #ifdef CONFIG_MAGIC_SYSRQ /* racy */ if (len == 3 && buf[1] == '-') { - ctrlchar_sysrq_key = buf[2]; - schedule_work(&ctrlchar_work); + ctrlchar_sysrq.key = buf[2]; + schedule_sysrq_work(&ctrlchar_sysrq); return CTRLCHAR_SYSRQ; } #endif |