linux-kernel - [PATCHv2] staging: comedi: fix potentially uninitialised variable

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Date:	Mon, 11 Nov 2013 12:31:51 +0100
From:	Michal Nazarewicz <mina86@...a86.com>
To:	Dan Carpenter <dan.carpenter@...cle.com>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	H Hartley Sweeten <hsweeten@...ionengravers.com>,
	Ian Abbott <abbotti@....co.uk>, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: [PATCHv2] staging: comedi: fix potentially uninitialised variable

If none of the if conditions take a true path, the ret variable will
never be assigned a value.

Signed-off-by: Michal Nazarewicz <mina86@...a86.com>
---
 drivers/staging/comedi/drivers/vmk80xx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

On Sun, Nov 10 2013, Dan Carpenter wrote:
> Don't use a From: unless you are sending it on behalf of another sender.
>
> You need a Signed-off-by line and it has to match your email address
> which you used to send the email.

Sorry about that, forgot about “-s”.

> Otherwise, the patch is good an fixes an important bug.

diff --git a/drivers/staging/comedi/drivers/vmk80xx.c b/drivers/staging/comedi/drivers/vmk80xx.c
index 933b01a..0adf3cf 100644
--- a/drivers/staging/comedi/drivers/vmk80xx.c
+++ b/drivers/staging/comedi/drivers/vmk80xx.c
@@ -465,7 +465,7 @@ static int vmk80xx_do_insn_bits(struct comedi_device *dev,
 	unsigned char *rx_buf = devpriv->usb_rx_buf;
 	unsigned char *tx_buf = devpriv->usb_tx_buf;
 	int reg, cmd;
-	int ret;
+	int ret = 0;
 
 	if (devpriv->model == VMK8061_MODEL) {
 		reg = VMK8061_DO_REG;
-- 
1.8.3.2
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