Re: [PATCH v2 5/6] staging: comedi: Remove set but not used variable 'hi'

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On 08/10/2019 08:41, zhengbin wrote:
Fixes gcc '-Wunused-but-set-variable' warning:

drivers/staging/comedi/drivers/dt2815.c: In function dt2815_ao_insn:
drivers/staging/comedi/drivers/dt2815.c:91:19: warning: variable hi set but not used [-Wunused-but-set-variable]

It is not used since commit d6a929b7608a ("Staging:
comedi: add dt2815 driver")

Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: zhengbin <zhengbin13@xxxxxxxxxx>
---
  drivers/staging/comedi/drivers/dt2815.c | 3 +--
  1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/staging/comedi/drivers/dt2815.c b/drivers/staging/comedi/drivers/dt2815.c
index 83026ba..bcf85ec 100644
--- a/drivers/staging/comedi/drivers/dt2815.c
+++ b/drivers/staging/comedi/drivers/dt2815.c
@@ -88,12 +88,11 @@ static int dt2815_ao_insn(struct comedi_device *dev, struct comedi_subdevice *s,
  	struct dt2815_private *devpriv = dev->private;
  	int i;
  	int chan = CR_CHAN(insn->chanspec);
-	unsigned int lo, hi;
+	unsigned int lo;
  	int ret;

  	for (i = 0; i < insn->n; i++) {
  		lo = ((data[i] & 0x0f) << 4) | (chan << 1) | 0x01;
-		hi = (data[i] & 0xff0) >> 4;

  		ret = comedi_timeout(dev, s, insn, dt2815_ao_status, 0x00);
  		if (ret)
--
2.7.4


There is something fishy going on in this one too. It should be writing the 'hi' value to the card registers.

Please could you omit this patch from the series so I can investigate?

--
-=( Ian Abbott <abbotti@xxxxxxxxx> || Web: www.mev.co.uk )=-
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