linux-kernel - [PATCH v2] usb: g_ffs: fix compilation warning

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Message-Id: <1380925821-12848-1-git-send-email-david.a.cohen@linux.intel.com>
Date:	Fri,  4 Oct 2013 15:30:21 -0700
From:	David Cohen <david.a.cohen@...ux.intel.com>
To:	gregkh@...uxfoundation.org, balbi@...com
Cc:	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	David Cohen <david.a.cohen@...ux.intel.com>
Subject: [PATCH v2] usb: g_ffs: fix compilation warning

If USB_FUNCTIONFS is selected without USB_FUNCTIONFS_ETH and
USB_FUNCTIONFS_RNIS, u_ether.h won't be included and then
USB_ETHERNET_MODULE_PARAMAETERS macro won't be available causing the
following warning compilation:

drivers/usb/gadget/g_ffs.c:81:1: warning: data definition has no type or
storage class [enabled by default]
drivers/usb/gadget/g_ffs.c:81:1: warning: type defaults to ‘int’ in
declaration of ‘USB_ETHERNET_MODULE_PARAMETERS’ [-Wimplicit-int]
drivers/usb/gadget/g_ffs.c:81:1: warning: function declaration isn’t a
prototype [-Wstrict-prototypes]

This patch fixes the warning by making USB_ETHERNET_MODULE_PARAMETERS to
be used iff u_ether.h is included, otherwise it is not needed.

Signed-off-by: David Cohen <david.a.cohen@...ux.intel.com>
---
 drivers/usb/gadget/g_ffs.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/gadget/g_ffs.c b/drivers/usb/gadget/g_ffs.c
index 5327c82..2344efe 100644
--- a/drivers/usb/gadget/g_ffs.c
+++ b/drivers/usb/gadget/g_ffs.c
@@ -76,7 +76,9 @@ struct gfs_ffs_obj {
 
 USB_GADGET_COMPOSITE_OPTIONS();
 
+#if defined CONFIG_USB_FUNCTIONFS_ETH || defined CONFIG_USB_FUNCTIONFS_RNDIS
 USB_ETHERNET_MODULE_PARAMETERS();
+#endif
 
 static struct usb_device_descriptor gfs_dev_desc = {
 	.bLength		= sizeof gfs_dev_desc,
-- 
1.8.4.rc3

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