linux-kernel - [PATCH] usb: gadget: fix sparse warnings

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Date:	Thu,  5 Feb 2015 13:11:47 +0000
From:	Lad Prabhakar <prabhakar.csengg@...il.com>
To:	Felipe Balbi <balbi@...com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Andrzej Pietrasiewicz <andrzej.p@...sung.com>
Cc:	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	"Lad, Prabhakar" <prabhakar.csengg@...il.com>
Subject: [PATCH] usb: gadget: fix sparse warnings

From: "Lad, Prabhakar" <prabhakar.csengg@...il.com>

this patch fixes following sparse warnings:

g_ffs.c:136:3: warning: symbol 'gfs_configurations' was not declared. Should it be static?
g_ffs.c:281:16: warning: Using plain integer as NULL pointer

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@...il.com>
---
 Found this issue on linux-next (gcc  version 4.9.2,
 sparse version  0.4.5-rc1)and applies on top linux-next.
 
 drivers/usb/gadget/legacy/g_ffs.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/gadget/legacy/g_ffs.c b/drivers/usb/gadget/legacy/g_ffs.c
index 06acfa5..b01b88e 100644
--- a/drivers/usb/gadget/legacy/g_ffs.c
+++ b/drivers/usb/gadget/legacy/g_ffs.c
@@ -133,7 +133,9 @@ struct gfs_configuration {
 	struct usb_configuration c;
 	int (*eth)(struct usb_configuration *c);
 	int num;
-} gfs_configurations[] = {
+};
+
+static struct gfs_configuration gfs_configurations[] = {
 #ifdef CONFIG_USB_FUNCTIONFS_RNDIS
 	{
 		.eth		= bind_rndis_config,
@@ -278,7 +280,7 @@ static void *functionfs_acquire_dev(struct ffs_dev *dev)
 	if (!try_module_get(THIS_MODULE))
 		return ERR_PTR(-ENOENT);
 	
-	return 0;
+	return NULL;
 }
 
 static void functionfs_release_dev(struct ffs_dev *dev)
-- 
1.9.1

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