linux-kernel - [PATCH 3.16.y-ckt 15/17] staging: comedi: ni_tiocmd: change mistaken use of start_src for start

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Message-Id: <1460484484-22395-16-git-send-email-luis.henriques@canonical.com>
Date:	Tue, 12 Apr 2016 19:08:02 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	"Spencer E. Olson" <olsonse@...ch.edu>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Ian Abbott <abbotti@....co.uk>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.16.y-ckt 15/17] staging: comedi: ni_tiocmd: change mistaken use of start_src for start_arg

3.16.7-ckt27 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: "Spencer E. Olson" <olsonse@...ch.edu>

commit 1fd24a4702d2af0ea4d5845126cf57d4d1796216 upstream.

This fixes a bug in function ni_tio_input_inttrig().  The trigger number
should be compared to cmd->start_arg, not cmd->start_src.

Fixes: 6a760394d7eb ("staging: comedi: ni_tiocmd: clarify the cmd->start_arg validation and use")
Signed-off-by: Spencer E. Olson <olsonse@...ch.edu>
Reviewed-by: Ian Abbott <abbotti@....co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Ian Abbott <abbotti@....co.uk>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 drivers/staging/comedi/drivers/ni_tiocmd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/comedi/drivers/ni_tiocmd.c b/drivers/staging/comedi/drivers/ni_tiocmd.c
index 2557ab48cb6c..db4dc1410342 100644
--- a/drivers/staging/comedi/drivers/ni_tiocmd.c
+++ b/drivers/staging/comedi/drivers/ni_tiocmd.c
@@ -98,7 +98,7 @@ static int ni_tio_input_inttrig(struct comedi_device *dev,
 
 	BUG_ON(counter == NULL);
 
-	if (trig_num != cmd->start_src)
+	if (trig_num != cmd->start_arg)
 		return -EINVAL;
 
 	spin_lock_irqsave(&counter->lock, flags);