linux-kernel - [PATCH 4.4 092/210] staging: comedi: ni_tiocmd: change mistaken use of start_src for start

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Message-Id: <20160410183529.887249788@linuxfoundation.org>
Date:	Sun, 10 Apr 2016 11:35:13 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, "Spencer E. Olson" <olsonse@...ch.edu>,
	Ian Abbott <abbotti@....co.uk>
Subject: [PATCH 4.4 092/210] staging: comedi: ni_tiocmd: change mistaken use of start_src for start_arg

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

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

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>

---
 drivers/staging/comedi/drivers/ni_tiocmd.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/staging/comedi/drivers/ni_tiocmd.c
+++ b/drivers/staging/comedi/drivers/ni_tiocmd.c
@@ -92,7 +92,7 @@ static int ni_tio_input_inttrig(struct c
 	unsigned long flags;
 	int ret = 0;

-	if (trig_num != cmd->start_src)
+	if (trig_num != cmd->start_arg)
 		return -EINVAL;

 	spin_lock_irqsave(&counter->lock, flags);