From: robherring2@gmail.com (Rob Herring)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: highbank: retry wfi on reset request
Date: Thu, 25 Oct 2012 22:20:37 -0500 [thread overview]
Message-ID: <1351221637-21747-1-git-send-email-robherring2@gmail.com> (raw)
From: Rob Herring <rob.herring@calxeda.com>
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 <rob.herring@calxeda.com>
---
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
next reply other threads:[~2012-10-26 3:20 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-26 3:20 Rob Herring [this message]
2012-10-29 17:22 ` [PATCH] ARM: highbank: retry wfi on reset request Rob Herring
2012-11-06 14:55 ` Olof Johansson
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