linux-kernel - [PATCH] regulator: core: Lookup based on supply name alone as last option

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Message-ID: <20170627055712.GA2592@sjc-ads-988.cisco.com>
Date:   Mon, 26 Jun 2017 22:57:12 -0700
From:   Gaurav Gupta <gauragup@...co.com>
To:     lgirdwood@...il.com, broonie@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] regulator: core: Lookup based on supply name alone as last
 option

If there are two regulators with the same supply name, the current
lookup just based on the supply name would always return the first one.
Further in the function, there is code to check both dev name and supply
name and return the matching regulator. This should be done before the
lookup based on supply name alone, which should be a last resort.

Signed-off-by: Gaurav Gupta <gauragup@...co.com>
---
 drivers/regulator/core.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index c0d9ae8..80460df 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1489,10 +1489,6 @@ static struct regulator_dev *regulator_dev_lookup(struct device *dev,
 	if (dev)
 		devname = dev_name(dev);
 
-	r = regulator_lookup_by_name(supply);
-	if (r)
-		return r;
-
 	mutex_lock(&regulator_list_mutex);
 	list_for_each_entry(map, &regulator_map_list, list) {
 		/* If the mapping has a device set up it must match */
@@ -1508,6 +1504,7 @@ static struct regulator_dev *regulator_dev_lookup(struct device *dev,
 	}
 	mutex_unlock(&regulator_list_mutex);
 
+	r = regulator_lookup_by_name(supply);
 	if (r)
 		return r;
 
-- 
2.10.2.dirty