diff options
author | Frank Mori Hess <fmh6jj@gmail.com> | 2018-03-15 13:25:44 +0300 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-08 12:52:00 +0300 |
commit | 5efa3b7556062ae4f4dc0eb314112227aca12c0b (patch) | |
tree | 6341291427cc02d76b47918f7f600746449d6da5 /drivers/staging | |
parent | 96450e0ffdb7bdf0e6b7673e9532de02135c47ab (diff) | |
download | linux-5efa3b7556062ae4f4dc0eb314112227aca12c0b.tar.xz |
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: <stable@vger.kernel.org> # v4.2+
Signed-off-by: Frank Mori Hess <fmh6jj@gmail.com>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging')
-rw-r--r-- | drivers/staging/comedi/drivers/ni_mio_common.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c b/drivers/staging/comedi/drivers/ni_mio_common.c index c975f6e8be49..8f181caffca3 100644 --- a/drivers/staging/comedi/drivers/ni_mio_common.c +++ b/drivers/staging/comedi/drivers/ni_mio_common.c @@ -1348,6 +1348,8 @@ 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); } |