linux-kernel - [PATCH v3 12/13] usb: gadget: udc: gr_udc: create debugfs directory under usb root

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Message-ID: <1573728085-29016-12-git-send-email-chunfeng.yun@mediatek.com>
Date:   Thu, 14 Nov 2019 18:41:24 +0800
From:   Chunfeng Yun <chunfeng.yun@...iatek.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Felipe Balbi <balbi@...nel.org>
CC:     Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Peter Chen <Peter.Chen@....com>,
        Minas Harutyunyan <hminas@...opsys.com>,
        Cristian Birsan <cristian.birsan@...rochip.com>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Ludovic Desroches <ludovic.desroches@...rochip.com>,
        Kevin Cernekee <cernekee@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        <bcm-kernel-feedback-list@...adcom.com>,
        Daniel Mack <daniel@...que.org>,
        Haojian Zhuang <haojian.zhuang@...il.com>,
        Robert Jarzmik <robert.jarzmik@...e.fr>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>, Bin Liu <b-liu@...com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Stephen Boyd <swboyd@...omium.org>,
        Chunfeng Yun <chunfeng.yun@...iatek.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Colin Ian King <colin.king@...onical.com>,
        Biju Das <biju.das@...renesas.com>,
        Fabrizio Castro <fabrizio.castro@...renesas.com>,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Yangtao Li <tiny.windzz@...il.com>,
        <linux-media@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-usb@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>
Subject: [PATCH v3 12/13] usb: gadget: udc: gr_udc: 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/gr_udc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/udc/gr_udc.c b/drivers/usb/gadget/udc/gr_udc.c
index 7a0e9a58c2d8..5d5a0bc79757 100644
--- a/drivers/usb/gadget/udc/gr_udc.c
+++ b/drivers/usb/gadget/udc/gr_udc.c
@@ -29,6 +29,7 @@
 #include <linux/list.h>
 #include <linux/interrupt.h>
 #include <linux/device.h>
+#include <linux/usb.h>
 #include <linux/usb/ch9.h>
 #include <linux/usb/gadget.h>
 #include <linux/dma-mapping.h>
@@ -208,7 +209,7 @@ static void gr_dfs_create(struct gr_udc *dev)
 {
 	const char *name = "gr_udc_state";
 
-	dev->dfs_root = debugfs_create_dir(dev_name(dev->dev), NULL);
+	dev->dfs_root = debugfs_create_dir(dev_name(dev->dev), usb_debug_root);
 	debugfs_create_file(name, 0444, dev->dfs_root, dev, &gr_dfs_fops);
 }
 
-- 
2.23.0