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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Malcolm Priestley <tvboxspy@gmail.com>
Subject: [PATCH 4.14 078/107] staging: vt6655: Remove vif check from vnt_interrupt
Date:   Mon,  1 Apr 2019 19:02:33 +0200
Message-Id: <20190401170052.738038744@linuxfoundation.org>
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4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Malcolm Priestley <tvboxspy@gmail.com>

commit cc26358f89c3e493b54766b1ca56cfc6b14db78a upstream.

A check for vif is made in vnt_interrupt_work.

There is a small chance of leaving interrupt disabled while vif
is NULL and the work hasn't been scheduled.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
CC: stable@vger.kernel.org # v4.2+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/staging/vt6655/device_main.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/staging/vt6655/device_main.c
+++ b/drivers/staging/vt6655/device_main.c
@@ -1079,8 +1079,7 @@ static irqreturn_t vnt_interrupt(int irq
 {
 	struct vnt_private *priv = arg;
 
-	if (priv->vif)
-		schedule_work(&priv->interrupt_work);
+	schedule_work(&priv->interrupt_work);
 
 	return IRQ_HANDLED;
 }