From fcd75f921dfa21a745869090c512ce4c6f2f0477 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Wed, 9 Oct 2013 15:29:14 +0800 Subject: [PATCH] ARM: imx: do not return from imx_cpu_die() call When imx_cpu_die() is being called, the cpu should never return from the call but just in WFI and wait for hardware to take it down. So let's do cpu_do_idle() repeatly in the call. Doing this help improve the relibility of hotplug operation. Signed-off-by: Shawn Guo --- arch/arm/mach-imx/hotplug.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-imx/hotplug.c b/arch/arm/mach-imx/hotplug.c index 3daf1ed90579..b35e99cc5e5b 100644 --- a/arch/arm/mach-imx/hotplug.c +++ b/arch/arm/mach-imx/hotplug.c @@ -52,7 +52,9 @@ void imx_cpu_die(unsigned int cpu) * the register being cleared to kill the cpu. */ imx_set_cpu_arg(cpu, ~0); - cpu_do_idle(); + + while (1) + cpu_do_idle(); } int imx_cpu_kill(unsigned int cpu) -- 2.39.5