From baa392b075f84359c79264a2482be434313ba25d Mon Sep 17 00:00:00 2001 From: Frank Mori Hess Date: Thu, 15 Mar 2018 10:25:44 +0000 Subject: staging: comedi: ni_mio_common: ack ai fifo error interrupts. commit e1d9fc04c41840a4688ef6ce90b6dcca157ea4d7 upstream. Ack ai fifo error interrupts in interrupt handler to clear interrupt after fifo overflow. It should prevent lock-ups after the ai fifo overflows. Cc: # v4.2+ Signed-off-by: Frank Mori Hess Signed-off-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/ni_mio_common.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/staging/comedi/drivers/ni_mio_common.c') diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c b/drivers/staging/comedi/drivers/ni_mio_common.c index a574885ffba9..18c5312f7886 100644 --- a/drivers/staging/comedi/drivers/ni_mio_common.c +++ b/drivers/staging/comedi/drivers/ni_mio_common.c @@ -1284,6 +1284,8 @@ static void ack_a_interrupt(struct comedi_device *dev, unsigned short a_status) ack |= NISTC_INTA_ACK_AI_START; if (a_status & NISTC_AI_STATUS1_STOP) ack |= NISTC_INTA_ACK_AI_STOP; + if (a_status & NISTC_AI_STATUS1_OVER) + ack |= NISTC_INTA_ACK_AI_ERR; if (ack) ni_stc_writew(dev, ack, NISTC_INTA_ACK_REG); } -- cgit v1.2.3