From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Samuel Ortiz <sameo@linux.intel.com>
Cc: linux-kernel@vger.kernel.org,
patches@opensource.wolfsonmicro.com,
Mark Brown <broonie@opensource.wolfsonmicro.com>
Subject: [PATCH] mfd: arizona: Check errors from regcache_sync()
Date: Fri, 4 Jan 2013 17:16:12 +0000 [thread overview]
Message-ID: <1357319772-11347-1-git-send-email-broonie@opensource.wolfsonmicro.com> (raw)
If the control bus is unrelabile we may hit errors during regcache_sync(),
especially given that it tends to be one the most dense bursts of I/O in
many systems.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
---
drivers/mfd/arizona-core.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c
index 2281e80..f8738aa 100644
--- a/drivers/mfd/arizona-core.c
+++ b/drivers/mfd/arizona-core.c
@@ -239,7 +239,12 @@ static int arizona_runtime_resume(struct device *dev)
return ret;
}
- regcache_sync(arizona->regmap);
+ ret = regcache_sync(arizona->regmap);
+ if (ret != 0) {
+ dev_err(arizona->dev, "Failed to restore register cache\n");
+ regulator_disable(arizona->dcvdd);
+ return ret;
+ }
return 0;
}
--
1.7.10.4
next reply other threads:[~2013-01-04 17:16 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-04 17:16 Mark Brown [this message]
2013-01-22 3:30 ` Samuel Ortiz
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