4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Malcolm Priestley <tvboxspy@xxxxxxxxx> 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@xxxxxxxxx> CC: stable@xxxxxxxxxxxxxxx # v4.2+ Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 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; }