queue-4.14/staging-vt6655-remove-vif-check-from-vnt_interrupt.patch

   1 From cc26358f89c3e493b54766b1ca56cfc6b14db78a Mon Sep 17 00:00:00 2001
   2 From: Malcolm Priestley <tvboxspy@gmail.com>
   3 Date: Wed, 27 Mar 2019 18:45:26 +0000
   4 Subject: staging: vt6655: Remove vif check from vnt_interrupt
   5
   6 From: Malcolm Priestley <tvboxspy@gmail.com>
   7
   8 commit cc26358f89c3e493b54766b1ca56cfc6b14db78a upstream.
   9
  10 A check for vif is made in vnt_interrupt_work.
  11
  12 There is a small chance of leaving interrupt disabled while vif
  13 is NULL and the work hasn't been scheduled.
  14
  15 Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
  16 CC: stable@vger.kernel.org # v4.2+
  17 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  18
  19 ---
  20  drivers/staging/vt6655/device_main.c |    3 +--
  21  1 file changed, 1 insertion(+), 2 deletions(-)
  22
  23 --- a/drivers/staging/vt6655/device_main.c
  24 +++ b/drivers/staging/vt6655/device_main.c
  25 @@ -1079,8 +1079,7 @@ static irqreturn_t vnt_interrupt(int irq
  26  {
  27         struct vnt_private *priv = arg;
  28
  29 -       if (priv->vif)
  30 -               schedule_work(&priv->interrupt_work);
  31 +       schedule_work(&priv->interrupt_work);
  32
  33         return IRQ_HANDLED;
  34  }