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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Thu, 15 Aug 2019 14:59:03 +0200
Subject: USB: phy: fsl-usb: convert platform driver to use dev_groups

Git-commit: 6d03c140db2e9296407bef470473e0e8be31b2c5
Patch-mainline: v5.4-rc1
References: jsc#SLE-12251

Platform drivers now have the option to have the platform core create
and remove any needed sysfs attribute files.  So take advantage of that
and do not register "by hand" any sysfs files.

Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Link: https://lore.kernel.org/r/20190815125903.GA17065@kroah.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
---
 drivers/usb/phy/phy-fsl-usb.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/usb/phy/phy-fsl-usb.c b/drivers/usb/phy/phy-fsl-usb.c
index f7c96d209eda..f6a037b5e9ef 100644
--- a/drivers/usb/phy/phy-fsl-usb.c
+++ b/drivers/usb/phy/phy-fsl-usb.c
@@ -1043,6 +1043,11 @@ static ssize_t show_fsl_usb2_otg_state(struct device *dev,
 
 static DEVICE_ATTR(fsl_usb2_otg_state, S_IRUGO, show_fsl_usb2_otg_state, NULL);
 
+static struct attribute *fsl_otg_attrs[] = {
+	&dev_attr_fsl_usb2_otg_state.attr,
+	NULL,
+};
+ATTRIBUTE_GROUPS(fsl_otg);
 
 /* Char driver interface to control some OTG input */
 
@@ -1132,10 +1137,6 @@ static int fsl_otg_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	ret = device_create_file(&pdev->dev, &dev_attr_fsl_usb2_otg_state);
-	if (ret)
-		dev_warn(&pdev->dev, "Can't register sysfs attribute\n");
-
 	return ret;
 }
 
@@ -1152,8 +1153,6 @@ static int fsl_otg_remove(struct platform_device *pdev)
 	kfree(fsl_otg_dev->phy.otg);
 	kfree(fsl_otg_dev);
 
-	device_remove_file(&pdev->dev, &dev_attr_fsl_usb2_otg_state);
-
 	unregister_chrdev(FSL_OTG_MAJOR, FSL_OTG_NAME);
 
 	if (pdata->exit)
@@ -1168,6 +1167,7 @@ struct platform_driver fsl_otg_driver = {
 	.driver = {
 		.name = driver_name,
 		.owner = THIS_MODULE,
+		.dev_groups = fsl_otg_groups,
 	},
 };
 
-- 
2.26.2