From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Date: Thu, 11 Feb 2010 17:22:45 +0000 (+0000)
Subject: regulator: Assume regulators are enabled if they don't report anything
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9a7f6a4c6edc84748c6477c9df56691a0e61b8fd;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git

regulator: Assume regulators are enabled if they don't report anything

If a regulator driver does not provide a way to query if the driver is
enabled then assume that it is enabled.  This is very likely to reflect
the actual state is more useful for callers than reporting an error.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
---

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index ca8e1642538b..75a26f780918 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1466,9 +1466,9 @@ EXPORT_SYMBOL_GPL(regulator_force_disable);
 
 static int _regulator_is_enabled(struct regulator_dev *rdev)
 {
-	/* sanity check */
+	/* If we don't know then assume that the regulator is always on */
 	if (!rdev->desc->ops->is_enabled)
-		return -EINVAL;
+		return 1;
 
 	return rdev->desc->ops->is_enabled(rdev);
 }