From: Nishanth Menon <nm@ti.com>
Date: Thu, 24 Jul 2014 15:24:19 +0000 (-0500)
Subject: ARM: OMAP4+: PM: Use only valid low power state for CPU hotplug
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3e6a1c945950140926dd6e2cc667893de0a7fe3b;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

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>
---

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;