staging: comedi: ni_mio_common: ack ai fifo error interrupts.
commit e1d9fc04c4
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>
pull/10/head
parent
4be89529c0
commit
a59779368b
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@ -1284,6 +1284,8 @@ static void ack_a_interrupt(struct comedi_device *dev, unsigned short a_status)
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ack |= NISTC_INTA_ACK_AI_START;
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if (a_status & NISTC_AI_STATUS1_STOP)
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ack |= NISTC_INTA_ACK_AI_STOP;
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if (a_status & NISTC_AI_STATUS1_OVER)
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ack |= NISTC_INTA_ACK_AI_ERR;
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if (ack)
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ni_stc_writew(dev, ack, NISTC_INTA_ACK_REG);
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}
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