[PATCH] ARM: highbank: retry wfi on reset request

From: Rob Herring <redacted>

In some cases, an interrupt can occur and prevent cause failure to enter
wfi. This causes reset to hang. Retrying the wfi should be enough to
prevent reset from hanging.

Signed-off-by: Rob Herring <redacted>
---
 arch/arm/mach-highbank/system.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-highbank/system.c b/arch/arm/mach-highbank/system.c
index 82c2723..86e37cd 100644
--- a/arch/arm/mach-highbank/system.c
+++ b/arch/arm/mach-highbank/system.c

@@ -28,6 +28,7 @@ void highbank_restart(char mode, const char *cmd)
 		hignbank_set_pwr_soft_reset();
 
 	scu_power_mode(scu_base_addr, SCU_PM_POWEROFF);
-	cpu_do_idle();
+	while (1)
+		cpu_do_idle();
 }
 

-- 
1.7.10.4

On 10/25/2012 10:20 PM, Rob Herring wrote:

From: Rob Herring <redacted>

In some cases, an interrupt can occur and prevent cause failure to enter
wfi. This causes reset to hang. Retrying the wfi should be enough to
prevent reset from hanging.

Signed-off-by: Rob Herring <redacted>
---

Arnd, Olof,

Can you please apply this for 3.7?

Rob

On Thu, Oct 25, 2012 at 10:20:37PM -0500, Rob Herring wrote:

From: Rob Herring <redacted>

In some cases, an interrupt can occur and prevent cause failure to enter
wfi. This causes reset to hang. Retrying the wfi should be enough to
prevent reset from hanging.

Signed-off-by: Rob Herring <redacted>

Applied, thanks.


-Olof