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authorShawn Guo <shawn.guo@linaro.org>2013-01-14 14:08:50 +0800
committerShawn Guo <shawn.guo@linaro.org>2013-01-14 22:17:17 +0800
commit837576642167d701f983e4def0d3936b514a28ae (patch)
tree2f03e38dff819054b70eb3f499e6dab873bb4c96 /arch/arm/mach-imx/common.h
parentafc10301f70350b490ca518ceb793928854b5453 (diff)
ARM: imx: disable cpu in .cpu_kill hook
It's buggy to disable the cpu that is being hot-unplugged in .cpu_die hook which runs on the cpu itself. Instead, it should be done in .cpu_kill which runs on the thread (another cpu) that asks for shutting down the cpu. Move imx_enable_cpu(cpu, false) call into .cpu_kill hook, and leave the cpu to be hot-unplugged in WFI within .cpu_die, so that we can get a more stable cpu hot-plug operation. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'arch/arm/mach-imx/common.h')
-rw-r--r--arch/arm/mach-imx/common.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/common.h b/arch/arm/mach-imx/common.h
index 7191ab4434e5..fa36fb84ab19 100644
--- a/arch/arm/mach-imx/common.h
+++ b/arch/arm/mach-imx/common.h
@@ -142,6 +142,7 @@ extern int imx6q_set_lpm(enum mxc_cpu_pwr_mode mode);
extern void imx6q_clock_map_io(void);
extern void imx_cpu_die(unsigned int cpu);
+extern int imx_cpu_kill(unsigned int cpu);
#ifdef CONFIG_PM
extern void imx6q_pm_init(void);