From 9270bdf5405668ca5d75ace1d7872e2762162c47 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 4 Jan 2013 17:16:12 +0000 Subject: mfd: arizona: Check errors from regcache_sync() 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 Signed-off-by: Samuel Ortiz --- drivers/mfd/arizona-core.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'drivers/mfd') diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c index bc8a3ed..222c03a 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; } -- cgit v1.1