ARM: OMAP4+: PM: Use only valid low power state for CPU hotplug

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>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/omap-mpuss-lowpower.c b/arch/arm/mach-omap2/omap-mpuss-lowpower.c
index 4001325f90fb..e9cdacfe1923 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;