This is a note to let you know that I've just added the patch titled
staging: comedi: ni_mio_common: ack ai fifo error interrupts.
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
staging-comedi-ni_mio_common-ack-ai-fifo-error-interrupts.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From e1d9fc04c41840a4688ef6ce90b6dcca157ea4d7 Mon Sep 17 00:00:00 2001
From: Frank Mori Hess <fmh6jj@xxxxxxxxx>
Date: Thu, 15 Mar 2018 10:25:44 +0000
Subject: staging: comedi: ni_mio_common: ack ai fifo error interrupts.
From: Frank Mori Hess <fmh6jj@xxxxxxxxx>
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@xxxxxxxxxxxxxxx> # v4.2+
Signed-off-by: Frank Mori Hess <fmh6jj@xxxxxxxxx>
Signed-off-by: Ian Abbott <abbotti@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/comedi/drivers/ni_mio_common.c | 2 ++
1 file changed, 2 insertions(+)
--- 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 comed
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);
}
Patches currently in stable-queue which might be from fmh6jj@xxxxxxxxx are
queue-4.9/staging-comedi-ni_mio_common-ack-ai-fifo-error-interrupts.patch