The patch below does not apply to the 4.14-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 1990cf7c21ea185cec98c6d45a82c04481261e35 Mon Sep 17 00:00:00 2001
From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
Date: Tue, 10 Apr 2018 14:38:50 +0900
Subject: [PATCH] usb: gadget: udc: renesas_usb3: should remove debugfs
This patch fixes an issue that this driver doesn't remove its debugfs.
Fixes: 43ba968b00ea ("usb: gadget: udc: renesas_usb3: add debugfs to set the b-device mode")
Cc: <stable@xxxxxxxxxxxxxxx> # v4.14+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
Reviewed-by: Simon Horman <horms+renesas@xxxxxxxxxxxx>
Signed-off-by: Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx>
diff --git a/drivers/usb/gadget/udc/renesas_usb3.c b/drivers/usb/gadget/udc/renesas_usb3.c
index 409cde4e6a51..4ef2386c3ac4 100644
--- a/drivers/usb/gadget/udc/renesas_usb3.c
+++ b/drivers/usb/gadget/udc/renesas_usb3.c
@@ -333,6 +333,7 @@ struct renesas_usb3 {
struct extcon_dev *extcon;
struct work_struct extcon_work;
struct phy *phy;
+ struct dentry *dentry;
struct renesas_usb3_ep *usb3_ep;
int num_usb3_eps;
@@ -2393,8 +2394,12 @@ static void renesas_usb3_debugfs_init(struct renesas_usb3 *usb3,
file = debugfs_create_file("b_device", 0644, root, usb3,
&renesas_usb3_b_device_fops);
- if (!file)
+ if (!file) {
dev_info(dev, "%s: Can't create debugfs mode\n", __func__);
+ debugfs_remove_recursive(root);
+ } else {
+ usb3->dentry = root;
+ }
}
/*------- platform_driver ------------------------------------------------*/
@@ -2402,6 +2407,7 @@ static int renesas_usb3_remove(struct platform_device *pdev)
{
struct renesas_usb3 *usb3 = platform_get_drvdata(pdev);
+ debugfs_remove_recursive(usb3->dentry);
device_remove_file(&pdev->dev, &dev_attr_role);
usb_del_gadget_udc(&usb3->gadget);
