linux-kernel - [PATCH 3.16 015/305] [media] cx23885: uninitialized variable in cx23885_av_work

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Message-ID: <lsq.1471110171.995696017@decadent.org.uk>
Date:	Sat, 13 Aug 2016 18:42:51 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org,
	"Mauro Carvalho Chehab" <mchehab@....samsung.com>,
	"Hans Verkuil" <hans.verkuil@...co.com>,
	"Dan Carpenter" <dan.carpenter@...cle.com>
Subject: [PATCH 3.16 015/305] [media] cx23885: uninitialized variable in
 cx23885_av_work_handler()

3.16.37-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Dan Carpenter <dan.carpenter@...cle.com>

commit 60587bd0680507f48ae3a7360983228fd207de8a upstream.

The "handled" variable could be uninitialized if the
interrupt_service_routine() call back hasn't been implimented or if it
has been implemented but doesn't initialize "handled" to zero at the
start.  For example, adv76xx_isr() only sets "handled" to true.

Fixes: 44b153ca639f ('[media] m5mols: Add ISO sensitivity controls')

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Hans Verkuil <hans.verkuil@...co.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@....samsung.com>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/media/pci/cx23885/cx23885-av.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/media/pci/cx23885/cx23885-av.c
+++ b/drivers/media/pci/cx23885/cx23885-av.c
@@ -29,7 +29,7 @@ void cx23885_av_work_handler(struct work
 {
 	struct cx23885_dev *dev =
 			   container_of(work, struct cx23885_dev, cx25840_work);
-	bool handled;
+	bool handled = false;
 
 	v4l2_subdev_call(dev->sd_cx25840, core, interrupt_service_routine,
 			 PCI_MSK_AV_CORE, &handled);