diff options
| author | Frank Mori Hess <fmh6jj@gmail.com> | 2018-03-15 10:25:44 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-08 14:26:32 +0200 |
| commit | a59779368b33874df5857603e8863801296c3a7f (patch) | |
| tree | a3bdaa1d9115b389ee76afcd5375ac2795bd6ba0 /drivers/staging/comedi/drivers | |
| parent | 4be89529c013f22f95ea43b59a34cfc643432826 (diff) | |
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/comedi/drivers')
| -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 398347fedc47..2cac160993bb 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); } |