The contents of the Comedi configuration instruction
`INSN_CONFIG_TIMER_1` instruction are not very well defined, but the one
driver that uses it (the "cb_pcidas64" driver for the PCI-DAS4020/12
card) assumes its `insn->n` is 5. Add a check in
`check_insn_config_length()` to verify that `insn->n` is correct for
this configuration instruction.
Signed-off-by: Ian Abbott <abbo...@mev.co.uk>
---
drivers/staging/comedi/comedi_fops.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/staging/comedi/comedi_fops.c
b/drivers/staging/comedi/comedi_fops.c
index c1c6b2b4ab91..ceb6ba5dd57c 100644
--- a/drivers/staging/comedi/comedi_fops.c
+++ b/drivers/staging/comedi/comedi_fops.c
@@ -1209,6 +1209,7 @@ static int check_insn_config_length(struct comedi_insn
*insn,
break;
case INSN_CONFIG_PWM_OUTPUT:
case INSN_CONFIG_ANALOG_TRIG:
+ case INSN_CONFIG_TIMER_1:
if (insn->n == 5)
return 0;
break;
--
2.19.1
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