[PATCH 7/7] ARM: OMAP4+: PM: Use only valid low power state for CPU hotplug
From: nm@ti.com (Nishanth Menon)
Date: 2014-08-22 13:50:21
Also in:
linux-omap, lkml
Subsystem:
arm port, omap2+ support, the rest · Maintainers:
Russell King, Aaro Koskinen, Andreas Kemnade, Kevin Hilman, Roger Quadros, Tony Lindgren, Linus Torvalds
Not all SoCs support OFF mode - for example DRA74/72. So, use valid power state during CPU hotplug. Signed-off-by: Nishanth Menon <nm@ti.com> --- arch/arm/mach-omap2/omap-mpuss-lowpower.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/arch/arm/mach-omap2/omap-mpuss-lowpower.c b/arch/arm/mach-omap2/omap-mpuss-lowpower.c
index 4001325..e9cdacf 100644
--- a/arch/arm/mach-omap2/omap-mpuss-lowpower.c
+++ b/arch/arm/mach-omap2/omap-mpuss-lowpower.c@@ -298,6 +298,10 @@ int omap4_hotplug_cpu(unsigned int cpu, unsigned int power_state) if (omap_rev() == OMAP4430_REV_ES1_0) return -ENXIO; + /* Use the achievable power state for the domain */ + power_state = pwrdm_get_valid_lp_state(pm_info->pwrdm, + false, power_state); + if (power_state == PWRDM_POWER_OFF) cpu_state = 1;
--
1.7.9.5