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Commit b0a2b6d8 authored by Ian Abbott's avatar Ian Abbott Committed by Greg Kroah-Hartman
Browse files

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: default avatarIan Abbott <abbotti@mev.co.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 33cdce62

drivers/staging/comedi/comedi_fops.c

+4 −0
Original line number Diff line number Diff line
@@ -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: