tty/sysrq: Do not call sync directly from sysrq_do_reset()

sysrq_do_reset() is called in softirq context, so it cannot call
sync() directly. Instead, call orderly_reboot(), which creates a work
item to run /sbin/reboot, or do emergency_sync and restart if the
command fails.

Signed-off-by: Mark Tomlinson <mark.tomlinson@alliedtelesis.co.nz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c
index 28fb20e9f98454d100262f712184150944f19ec9..1f03078ec35276758adce55b3283f903c38a6ef6 100644 (file)
--- a/drivers/tty/sysrq.c
+++ b/drivers/tty/sysrq.c
@@ -653,8 +653,7 @@ static void sysrq_do_reset(struct timer_list *t)
 
        state->reset_requested = true;
 
-       ksys_sync();
-       kernel_restart(NULL);
+       orderly_reboot();
 }
 
 static void sysrq_handle_reset_request(struct sysrq_state *state)