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| author | Ian Abbott <abbotti@mev.co.uk> | 2012-11-14 11:22:57 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-11-14 16:25:08 -0800 |
| commit | b0a2b6d8ac9ce5d27c9086a196d8f44194561979 (patch) | |
| tree | c895dda68bf35495ba4db13aca375132f321c6bb /drivers/staging/comedi | |
| parent | 33cdce6293dcc0b10dcaa8bb5e6fdc8e56b5968f (diff) | |
| download | linux-b0a2b6d8ac9ce5d27c9086a196d8f44194561979.tar.gz linux-b0a2b6d8ac9ce5d27c9086a196d8f44194561979.tar.bz2 linux-b0a2b6d8ac9ce5d27c9086a196d8f44194561979.zip | |
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 <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/comedi')
| -rw-r--r-- | drivers/staging/comedi/comedi_fops.c | 4 |
1 files changed, 4 insertions, 0 deletions
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: |