The das16_ai_disable() function disables interrupts and the pacer clock. This
function is called by the subdevice (*cancel) operation.
The comedi core will not call a subdevice (*insn_read) operation while an
async command is running due to the s->busy check in parse_insn(). Since all
async commands are terminated by a (*cancel), the das16_ai_disable() is not
necessary in das16_ai_insn_read(). Remove it.
Signed-off-by: H Hartley Sweeten <hswee...@visionengravers.com>
Cc: Ian Abbott <abbo...@mev.co.uk>
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/staging/comedi/drivers/das16.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/staging/comedi/drivers/das16.c
b/drivers/staging/comedi/drivers/das16.c
index 6936223..6d0b00f 100644
--- a/drivers/staging/comedi/drivers/das16.c
+++ b/drivers/staging/comedi/drivers/das16.c
@@ -805,8 +805,6 @@ static int das16_ai_insn_read(struct comedi_device *dev,
int ret;
int i;
- das16_ai_disable(dev);
-
/* set multiplexer */
outb(chan | (chan << 4), dev->iobase + DAS16_MUX_REG);
--
2.0.3
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