If the user passes an invalid command, then we don't drop the lock
before returning. The check for invalid commands doesn't need to be
done under lock so I moved it forward a couple lines.
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
diff --git a/drivers/staging/comedi/drivers/vmk80xx.c b/drivers/staging/comedi/drivers/vmk80xx.c
index 10ac58d..856d0ea 100644
--- a/drivers/staging/comedi/drivers/vmk80xx.c
+++ b/drivers/staging/comedi/drivers/vmk80xx.c
@@ -1020,12 +1020,12 @@ static int vmk80xx_cnt_cinsn(struct comedi_device *cdev,
if (n)
return n;
- down(&dev->limit_sem);
-
insn_cmd = data[0];
if (insn_cmd != INSN_CONFIG_RESET && insn_cmd != GPCT_RESET)
return -EINVAL;
+ down(&dev->limit_sem);
+
chan = CR_CHAN(insn->chanspec);
if (dev->board.model == VMK8055_MODEL) {
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