summaryrefslogtreecommitdiffstats
path: root/drivers/tty/sysrq.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/tty/sysrq.c')
-rw-r--r--drivers/tty/sysrq.c18
1 files changed, 11 insertions, 7 deletions
diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c
index d008f5a75197..b674793be478 100644
--- a/drivers/tty/sysrq.c
+++ b/drivers/tty/sysrq.c
@@ -246,8 +246,10 @@ static void sysrq_handle_showallcpus(int key)
* architecture has no support for it:
*/
if (!trigger_all_cpu_backtrace()) {
- struct pt_regs *regs = get_irq_regs();
+ struct pt_regs *regs = NULL;
+ if (in_irq())
+ regs = get_irq_regs();
if (regs) {
pr_info("CPU%d:\n", smp_processor_id());
show_regs(regs);
@@ -266,7 +268,10 @@ static struct sysrq_key_op sysrq_showallcpus_op = {
static void sysrq_handle_showregs(int key)
{
- struct pt_regs *regs = get_irq_regs();
+ struct pt_regs *regs = NULL;
+
+ if (in_irq())
+ regs = get_irq_regs();
if (regs)
show_regs(regs);
perf_event_print_debug();
@@ -649,9 +654,9 @@ static void sysrq_parse_reset_sequence(struct sysrq_state *state)
state->reset_seq_version = sysrq_reset_seq_version;
}
-static void sysrq_do_reset(unsigned long _state)
+static void sysrq_do_reset(struct timer_list *t)
{
- struct sysrq_state *state = (struct sysrq_state *) _state;
+ struct sysrq_state *state = from_timer(state, t, keyreset_timer);
state->reset_requested = true;
@@ -668,7 +673,7 @@ static void sysrq_handle_reset_request(struct sysrq_state *state)
mod_timer(&state->keyreset_timer,
jiffies + msecs_to_jiffies(sysrq_reset_downtime_ms));
else
- sysrq_do_reset((unsigned long)state);
+ sysrq_do_reset(&state->keyreset_timer);
}
static void sysrq_detect_reset_sequence(struct sysrq_state *state,
@@ -904,8 +909,7 @@ static int sysrq_connect(struct input_handler *handler,
sysrq->handle.handler = handler;
sysrq->handle.name = "sysrq";
sysrq->handle.private = sysrq;
- setup_timer(&sysrq->keyreset_timer,
- sysrq_do_reset, (unsigned long)sysrq);
+ timer_setup(&sysrq->keyreset_timer, sysrq_do_reset, 0);
error = input_register_handle(&sysrq->handle);
if (error) {