From f08a28e65cbdf80b4b4da7e423c45ee7c3ef35ac Mon Sep 17 00:00:00 2001 From: "Spencer E. Olson" Date: Tue, 12 Jan 2016 11:05:10 -0700 Subject: [PATCH] staging: comedi: ni_mio_common: use CR_CHAN more consistently Generally, the CR_CHAN macro is/should be used to access the relevant bits for channel identification in cmd->*_arg when the corresponding cmd->*_src==TRIG_EXT, including cmd->convert_arg in this case. This patch does not fix a bug per se, as NISTC_AI_MODE1_CONVERT_SRC() already masks the value sufficiently, but using CR_CHAN() here makes the code clearer as it avoids passing some irrelevant bits to NISTC_AI_MODE1_CONVERT_SRC() in the first place. Signed-off-by: Spencer E. Olson Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/ni_mio_common.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c b/drivers/staging/comedi/drivers/ni_mio_common.c index 5e8130a7d670..1978d65636fd 100644 --- a/drivers/staging/comedi/drivers/ni_mio_common.c +++ b/drivers/staging/comedi/drivers/ni_mio_common.c @@ -2428,7 +2428,8 @@ static int ni_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) ni_stc_writew(dev, mode2, NISTC_AI_MODE2_REG); break; case TRIG_EXT: - mode1 |= NISTC_AI_MODE1_CONVERT_SRC(1 + cmd->convert_arg); + mode1 |= NISTC_AI_MODE1_CONVERT_SRC(1 + + CR_CHAN(cmd->convert_arg)); if ((cmd->convert_arg & CR_INVERT) == 0) mode1 |= NISTC_AI_MODE1_CONVERT_POLARITY; ni_stc_writew(dev, mode1, NISTC_AI_MODE1_REG); -- 2.34.1