From b0a2b6d8ac9ce5d27c9086a196d8f44194561979 Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Wed, 14 Nov 2012 11:22:57 +0000 Subject: [PATCH] staging: comedi: check data length for INSN_CONFIG_DIGITAL_TRIG The newly defined format for the `INSN_CONFIG_DIGITAL_TRIG` configuration instruction expects 6 data values. Check the length in `check_insn_config_length()` before calling the comedi subdevice's `insn_config` handler. Signed-off-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/comedi_fops.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c index c2a32cf95a82..06906f6f7f49 100644 --- a/drivers/staging/comedi/comedi_fops.c +++ b/drivers/staging/comedi/comedi_fops.c @@ -880,6 +880,10 @@ static int check_insn_config_length(struct comedi_insn *insn, if (insn->n == 5) return 0; break; + case INSN_CONFIG_DIGITAL_TRIG: + if (insn->n == 6) + return 0; + break; /* by default we allow the insn since we don't have checks for * all possible cases yet */ default: -- 2.20.1