linux-kernel - [RESEND PATCH v3 2/3] usb: gadget: atmel: create debugfs directory under usb root

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Date:   Wed, 20 Nov 2019 14:43:02 +0800
From:   Chunfeng Yun <chunfeng.yun@...iatek.com>
To:     Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:     Cristian Birsan <cristian.birsan@...rochip.com>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Ludovic Desroches <ludovic.desroches@...rochip.com>,
        Bin Liu <b-liu@...com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Stephen Boyd <swboyd@...omium.org>,
        Chunfeng Yun <chunfeng.yun@...iatek.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>
Subject: [RESEND PATCH v3 2/3] usb: gadget: atmel: create debugfs directory under usb root

Now the USB gadget subsystem can use the USB debugfs root directory,
so move it's directory from the root of the debugfs filesystem into
the root of usb

Signed-off-by: Chunfeng Yun <chunfeng.yun@...iatek.com>
---
v3:
  1. fix up build error of undefined usb_debug_root

v2:
  1. abandon new API usb_debugfs_create_dir(), and use usb_debug_root
---
 drivers/usb/gadget/udc/atmel_usba_udc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c
index 86ffc8307864..48027e486e6b 100644
--- a/drivers/usb/gadget/udc/atmel_usba_udc.c
+++ b/drivers/usb/gadget/udc/atmel_usba_udc.c
@@ -18,6 +18,7 @@
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
 #include <linux/ctype.h>
+#include <linux/usb.h>
 #include <linux/usb/ch9.h>
 #include <linux/usb/gadget.h>
 #include <linux/delay.h>
@@ -226,7 +227,7 @@ static void usba_init_debugfs(struct usba_udc *udc)
 	struct dentry *root;
 	struct resource *regs_resource;
 
-	root = debugfs_create_dir(udc->gadget.name, NULL);
+	root = debugfs_create_dir(udc->gadget.name, usb_debug_root);
 	udc->debugfs_root = root;
 
 	regs_resource = platform_get_resource(udc->pdev, IORESOURCE_MEM,
-- 
2.23.0