diff options
| author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2015-01-26 16:17:14 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-01-28 11:14:04 -0800 |
| commit | fc4e02175285c4642f50ad7b4070848d9e9f63f8 (patch) | |
| tree | a2139e2cec64ea2b247520ad6a6d9f7ff7575e14 /drivers/staging/comedi/drivers/das16.c | |
| parent | 7157fda400c7aeeee1eb60d4c6fd31cef822dac0 (diff) | |
staging: comedi: das16: remove unnecessary das16_ai_disable()
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 <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/comedi/drivers/das16.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/das16.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/staging/comedi/drivers/das16.c b/drivers/staging/comedi/drivers/das16.c index 417ea755f42b..97e5e7dca954 100644 --- a/drivers/staging/comedi/drivers/das16.c +++ b/drivers/staging/comedi/drivers/das16.c @@ -831,8 +831,6 @@ 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); |