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| author | Shawn Guo <shawn.guo@linaro.org> | 2013-10-09 07:29:14 (GMT) |
|---|---|---|
| committer | Shawn Guo <shawn.guo@linaro.org> | 2013-10-21 01:37:31 (GMT) |
| commit | fcd75f921dfa21a745869090c512ce4c6f2f0477 (patch) | |
| tree | 82840decbad3aa699c7e33d3c38ac13c02f11c27 | |
| parent | 85920f3960fbc9e8f63b61ac13cb4d3d44c56a17 (diff) | |
| download | linux-fcd75f921dfa21a745869090c512ce4c6f2f0477.tar.xz | |
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 <shawn.guo@linaro.org>
| -rw-r--r-- | arch/arm/mach-imx/hotplug.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/arm/mach-imx/hotplug.c b/arch/arm/mach-imx/hotplug.c index 3daf1ed..b35e99c 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) |