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 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
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-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From e1d9fc04c41840a4688ef6ce90b6dcca157ea4d7 Mon Sep 17 00:00:00 2001
From: Frank Mori Hess fmh6jj@gmail.com 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@gmail.com
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
--- 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 @@ -1348,6 +1348,8 @@ 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@gmail.com are
queue-4.4/staging-comedi-ni_mio_common-ack-ai-fifo-error-interrupts.patch