From: Frank Mori Hess <fmh...@gmail.com>
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: <sta...@vger.kernel.org> # v4.2+
Signed-off-by: Frank Mori Hess <fmh...@gmail.com>
Signed-off-by: Ian Abbott <abbo...@mev.co.uk>
---
I have not tested this patch on hardware. -- Frank Mori Hess
Applies cleanly to v4.2+, but needs backporting for earlier stable
kernels. -- Ian Abbott.
---
drivers/staging/comedi/drivers/ni_mio_common.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c
b/drivers/staging/comedi/drivers/ni_mio_common.c
index d6eb55b41814..e40a2c0a9543 100644
--- a/drivers/staging/comedi/drivers/ni_mio_common.c
+++ b/drivers/staging/comedi/drivers/ni_mio_common.c
@@ -1275,6 +1275,8 @@ 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);
}
--
2.16.1
_______________________________________________
devel mailing list
de...@linuxdriverproject.org
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
