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ARM: OMAP2+: Restore MPU power domain if cpu_cluster_pm_enter() fails

Message ID 20200923062253.43095-1-tony@atomide.com
State New, archived
Headers show
Series ARM: OMAP2+: Restore MPU power domain if cpu_cluster_pm_enter() fails | expand

Commit Message

Tony Lindgren Sept. 23, 2020, 6:22 a.m. UTC
If cpu_cluster_pm_enter() fails, we need to set MPU power domain back
to enabled to prevent the next WFI from potentially triggering an
undesired MPU power domain state change.

We already do this for omap_enter_idle_smp() but are missing it for
omap_enter_idle_coupled().

Fixes: 55be2f50336f ("ARM: OMAP2+: Handle errors for cpu_pm")
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
 arch/arm/mach-omap2/cpuidle44xx.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
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Patch

diff --git a/arch/arm/mach-omap2/cpuidle44xx.c b/arch/arm/mach-omap2/cpuidle44xx.c
--- a/arch/arm/mach-omap2/cpuidle44xx.c
+++ b/arch/arm/mach-omap2/cpuidle44xx.c
@@ -174,8 +174,10 @@  static int omap_enter_idle_coupled(struct cpuidle_device *dev,
 		 */
 		if (mpuss_can_lose_context) {
 			error = cpu_cluster_pm_enter();
-			if (error)
+			if (error) {
+				omap_set_pwrdm_state(mpu_pd, PWRDM_POWER_ON);
 				goto cpu_cluster_pm_out;
+			}
 		}
 	}