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staging: comedi: Remove set but not used variable 'aref'

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Fixes gcc '-Wunused-but-set-variable' warning:

drivers/staging/comedi/drivers/dt3000.c: In function dt3k_ai_insn_read:
drivers/staging/comedi/drivers/dt3000.c:511:27: warning: variable aref set but not used [-Wunused-but-set-variable]

It is not used since commit 2e310235ca ("staging:
comedi: dt3000: rename dt3k_ai_insn()")

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Link: https://lore.kernel.org/r/1570520515-2186-7-git-send-email-zhengbin13@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
zhengbin
2019-10-08 15:41:55 +08:00
committed by Greg Kroah-Hartman
parent 82d20bc508
commit d49d1c76b9
1 changed files with 1 additions and 2 deletions
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3
drivers/staging/comedi/drivers/dt3000.c
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@@ -508,12 +508,11 @@ static int dt3k_ai_insn_read(struct comedi_device *dev,
unsigned int *data)
{
int i;
unsigned int chan, gain, aref;
unsigned int chan, gain;
chan = CR_CHAN(insn->chanspec);
gain = CR_RANGE(insn->chanspec);
/* XXX docs don't explain how to select aref */
aref = CR_AREF(insn->chanspec);
for (i = 0; i < insn->n; i++)
data[i] = dt3k_readsingle(dev, DPR_SUBSYS_AI, chan, gain);