From 2bd8f381a4382eaeef391e0a551230610bece057 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Fri, 13 Jul 2012 08:19:34 +0100 Subject: ARM: 7466/1: disable interrupt before spinning endlessly commit 98bd8b96b26db3399a48202318dca4aaa2515355 upstream. The CPU will endlessly spin at the end of machine_halt and machine_restart calls. However, this will lead to a soft lockup warning after about 20 seconds, if CONFIG_LOCKUP_DETECTOR is enabled, as system timer is still alive. Disable interrupt before going to spin endlessly, so that the lockup warning will never be seen. Reported-by: Marek Vasut Signed-off-by: Shawn Guo Signed-off-by: Russell King [bwh: Backported to 3.2: adjust context] Signed-off-by: Ben Hutchings --- arch/arm/kernel/process.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index 3d0c6fb74ae4..e68d2512f683 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -125,6 +125,7 @@ void arm_machine_restart(char mode, const char *cmd) */ mdelay(1000); printk("Reboot failed -- System halted\n"); + local_irq_disable(); while (1); } @@ -240,6 +241,7 @@ void machine_shutdown(void) void machine_halt(void) { machine_shutdown(); + local_irq_disable(); while (1); } -- cgit v1.2.3