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openrisc: restart: Call common handlers before hanging 

Currently openrisc will print a message and then hang in an infinite
loop when rebooting.

This patch adopts some code from ARM, which calls the common restart
infrastructure and hangs after a small delay if the restart infra
doesn't do anything.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Stafford Horne <shorne@gmail.com>
This commit is contained in:
Joel Stanley 2020-12-27 19:44:46 +10:30 committed by Stafford Horne
parent 472ab9ee15
commit 131172a4a8
1 changed files with 10 additions and 3 deletions
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13
arch/openrisc/kernel/process.c
View File

@ -34,6 +34,7 @@
#include <linux/init_task.h>
#include <linux/mqueue.h>
#include <linux/fs.h>
#include <linux/reboot.h>
#include <linux/uaccess.h>
#include <asm/io.h>
@ -49,10 +50,16 @@
*/
struct thread_info *current_thread_info_set[NR_CPUS] = { &init_thread_info, };
void machine_restart(void)
void machine_restart(char *cmd)
{
printk(KERN_INFO "*** MACHINE RESTART ***\n");
__asm__("l.nop 1");
do_kernel_restart(cmd);
/* Give a grace period for failure to restart of 1s */
mdelay(1000);
/* Whoops - the platform was unable to reboot. Tell the user! */
pr_emerg("Reboot failed -- System halted\n");
while (1);
}
/*