regulator: core: Link consumer with regulator driver

Add a device link between the consumer and the driver so that
the consumer is not suspended before the driver. The goal is to avoid
implementing suspend_late ops in regulator drivers.

Signed-off-by: pascal paillet <p.paillet@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index da9b0fed8330a8e45aac03cc6a4a844eb18d44d6..bb1324f93143f66e609fea2602329230f70ed4ce 100644 (file)
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1740,6 +1740,8 @@ struct regulator *_regulator_get(struct device *dev, const char *id,
                        rdev->use_count = 0;
        }
 
+       device_link_add(dev, &rdev->dev, DL_FLAG_STATELESS);
+
        return regulator;
 }
 
@@ -1829,9 +1831,21 @@ static void _regulator_put(struct regulator *regulator)
 
        debugfs_remove_recursive(regulator->debugfs);
 
-       /* remove any sysfs entries */
-       if (regulator->dev)
+       if (regulator->dev) {
+               int count = 0;
+               struct regulator *r;
+
+               list_for_each_entry(r, &rdev->consumer_list, list)
+                       if (r->dev == regulator->dev)
+                               count++;
+
+               if (count == 1)
+                       device_link_remove(regulator->dev, &rdev->dev);
+
+               /* remove any sysfs entries */
                sysfs_remove_link(&rdev->dev.kobj, regulator->supply_name);
+       }
+
        regulator_lock(rdev);
        list_del(&regulator->list);