From: Helge Deller deller@gmx.de
commit 2028315cf59bb899a5ac7e87dc48ecb8fac7ac24 upstream.
In case a machine can't power-off itself on system shutdown, allow the user to reboot it by pressing the RETURN key.
Cc: stable@vger.kernel.org # v4.14+ Signed-off-by: Helge Deller deller@gmx.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/parisc/kernel/process.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-)
--- a/arch/parisc/kernel/process.c +++ b/arch/parisc/kernel/process.c @@ -142,13 +142,18 @@ void machine_power_off(void) /* It seems we have no way to power the system off via * software. The user has to press the button himself. */
- printk(KERN_EMERG "System shut down completed.\n" - "Please power this system off now."); + printk("Power off or press RETURN to reboot.\n");
/* prevent soft lockup/stalled CPU messages for endless loop. */ rcu_sysrq_start(); lockup_detector_soft_poweroff(); - for (;;); + while (1) { + /* reboot if user presses RETURN key */ + if (pdc_iodc_getc() == 13) { + printk("Rebooting...\n"); + machine_restart(NULL); + } + } }
void (*pm_power_off)(void) = machine_power_off;