diff options
| author |   Shawn Guo <shawn.guo@linaro.org> | 2012-07-13 08:19:34 +0100 |
|---|---|---|
| committer |   Russell King <rmk+kernel@arm.linux.org.uk> | 2012-07-31 10:30:31 +0100 |
| commit | 98bd8b96b26db3399a48202318dca4aaa2515355 (patch) | |
| tree | 1dcb9a580130d0653b4d9b66bbf78b2fe30d1726 /arch | |
| parent | ARM: 7465/1: Handle >4GB memory sizes in device tree and mem=size@start option (diff) | |
| download | linux-dev-98bd8b96b26db3399a48202318dca4aaa2515355.tar.xz linux-dev-98bd8b96b26db3399a48202318dca4aaa2515355.zip | |
ARM: 7466/1: disable interrupt before spinning endlessly
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.
Cc: <stable@vger.kernel.org>
Reported-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/kernel/process.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index 19c95ea65b2f..693b744fd572 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -247,6 +247,7 @@ void machine_shutdown(void) void machine_halt(void) { machine_shutdown(); + local_irq_disable(); while (1); } @@ -268,6 +269,7 @@ void machine_restart(char *cmd) /* Whoops - the platform was unable to reboot. Tell the user! */ printk("Reboot failed -- System halted\n"); + local_irq_disable(); while (1); } |