[PATCH v2 1/2] platform/chrome: Use dev_groups to set device sysfs attributes

[Gwendal Grignou]

Instead of manually call sysfs_create_group()/sysfs_remove_group(), set
.dev_groups driver data structure, and let the bus base code create
sysfs attributes.

Fixes: 6fd7f2bbd442 ("mfd / platform: cros_ec: Move device sysfs attributes to 
its own driver")
Cc: sta...@vger.kernel.org
Signed-off-by: Gwendal Grignou <gwen...@google.com>
---
 New in v2.

 drivers/platform/chrome/cros_ec_sysfs.c | 28 +++++--------------------
 1 file changed, 5 insertions(+), 23 deletions(-)

diff --git a/drivers/platform/chrome/cros_ec_sysfs.c 
b/drivers/platform/chrome/cros_ec_sysfs.c
index f07eabcf9494c..114b9dbe981e7 100644
--- a/drivers/platform/chrome/cros_ec_sysfs.c
+++ b/drivers/platform/chrome/cros_ec_sysfs.c
@@ -335,34 +335,16 @@ static const struct attribute_group cros_ec_attr_group = {
        .is_visible = cros_ec_ctrl_visible,
 };
 
-static int cros_ec_sysfs_probe(struct platform_device *pd)
-{
-       struct cros_ec_dev *ec_dev = dev_get_drvdata(pd->dev.parent);
-       struct device *dev = &pd->dev;
-       int ret;
-
-       ret = sysfs_create_group(&ec_dev->class_dev.kobj, &cros_ec_attr_group);
-       if (ret < 0)
-               dev_err(dev, "failed to create attributes. err=%d\n", ret);
-
-       return ret;
-}
-
-static int cros_ec_sysfs_remove(struct platform_device *pd)
-{
-       struct cros_ec_dev *ec_dev = dev_get_drvdata(pd->dev.parent);
-
-       sysfs_remove_group(&ec_dev->class_dev.kobj, &cros_ec_attr_group);
-
-       return 0;
-}
+static const struct attribute_group *cros_ec_attr_groups[] = {
+       &cros_ec_attr_group,
+       NULL,
+};
 
 static struct platform_driver cros_ec_sysfs_driver = {
        .driver = {
                .name = DRV_NAME,
+               .dev_groups = cros_ec_attr_groups,
        },
-       .probe = cros_ec_sysfs_probe,
-       .remove = cros_ec_sysfs_remove,
 };
 
 module_platform_driver(cros_ec_sysfs_driver);
-- 
2.31.0.208.g409f899ff0-goog