linux-kernel - [PATCH] USB: DL100B webmail notifier: initialize return value

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Date:	Wed, 22 Dec 2010 13:55:24 +0100
From:	Melchior FRANZ <melchior.franz@...il.com>
To:	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	Greg KH <greg@...ah.com>
Subject: [PATCH] USB: DL100B webmail notifier: initialize return value

From: Melchior FRANZ <mfranz@....at>

If case of an unknown usb_device_id->driver_info (which could only
occur if the info got corrupted somewhere outside the usbled driver),
a debug message depended on an uninitialized value. This was harmless,
but ugly, and gets fixed with this patch.

Signed-off-by: Melchior FRANZ <mfranz@....at>
---

@Greg:
Argh ... sorry about that. The build system didn't warn me, not even
with EXTRA_CFLAGS=-W. And cppcheck ignored the problem as well. This
must be a plot to damage my reputation!  :-}

m.

 drivers/usb/misc/usbled.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/usb/misc/usbled.c b/drivers/usb/misc/usbled.c
index 1732d9b..1616ad1 100644
--- a/drivers/usb/misc/usbled.c
+++ b/drivers/usb/misc/usbled.c
@@ -45,7 +45,7 @@ struct usb_led {

 static void change_color(struct usb_led *led)
 {
-	int retval;
+	int retval = 0;
 	unsigned char *buffer;

 	buffer = kmalloc(8, GFP_KERNEL);
--
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