linux-kernel - [PATCH 01/30] usb: mtu3: mtu3_debug: Add forward declaration of 'struct ssusb

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Message-Id: <20200703174148.2749969-2-lee.jones@linaro.org>
Date:   Fri,  3 Jul 2020 18:41:19 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     gregkh@...uxfoundation.org, linux-usb@...r.kernel.org
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Lee Jones <lee.jones@...aro.org>,
        Chunfeng Yun <chunfeng.yun@...iatek.com>,
        linux-mediatek@...ts.infradead.org
Subject: [PATCH 01/30] usb: mtu3: mtu3_debug: Add forward declaration of 'struct ssusb_mtk'

Without it, the build system complains that it was declared inside
the parameter list.

Fixes the following W=1 kernel build warning(s):

 In file included from drivers/usb/mtu3/mtu3_trace.c:11:
 drivers/usb/mtu3/mtu3_debug.h:29:36: warning: ‘struct ssusb_mtk’ declared inside parameter list will not be visible outside of this definition or declaration
 29 | void ssusb_dev_debugfs_init(struct ssusb_mtk *ssusb);
 | ^~~~~~~~~
 drivers/usb/mtu3/mtu3_debug.h:30:35: warning: ‘struct ssusb_mtk’ declared inside parameter list will not be visible outside of this definition or declaration
 30 | void ssusb_dr_debugfs_init(struct ssusb_mtk *ssusb);
 | ^~~~~~~~~
 drivers/usb/mtu3/mtu3_debug.h:31:39: warning: ‘struct ssusb_mtk’ declared inside parameter list will not be visible outside of this definition or declaration
 31 | void ssusb_debugfs_create_root(struct ssusb_mtk *ssusb);
 | ^~~~~~~~~
 drivers/usb/mtu3/mtu3_debug.h:32:39: warning: ‘struct ssusb_mtk’ declared inside parameter list will not be visible outside of this definition or declaration
 32 | void ssusb_debugfs_remove_root(struct ssusb_mtk *ssusb);
 | ^~~~~~~~~

Cc: Chunfeng Yun <chunfeng.yun@...iatek.com>
Cc: linux-mediatek@...ts.infradead.org
Signed-off-by: Lee Jones <lee.jones@...aro.org>
---
 drivers/usb/mtu3/mtu3_debug.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/mtu3/mtu3_debug.h b/drivers/usb/mtu3/mtu3_debug.h
index fb6b28277c9b1..3084c46017c37 100644
--- a/drivers/usb/mtu3/mtu3_debug.h
+++ b/drivers/usb/mtu3/mtu3_debug.h
@@ -12,6 +12,8 @@
 
 #include <linux/debugfs.h>
 
+struct ssusb_mtk;
+
 #define MTU3_DEBUGFS_NAME_LEN 32
 
 struct mtu3_regset {
-- 
2.25.1