The comedi core validates that the 'chan' is valid for the subdevice
before calling the (*insn_read) operation. Remove the unnecessary check.
Signed-off-by: H Hartley Sweeten <hswee...@visionengravers.com>
Cc: Ian Abbott <abbo...@mev.co.uk>
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/staging/comedi/drivers/me4000.c | 5 -----
1 file changed, 5 deletions(-)
diff --git a/drivers/staging/comedi/drivers/me4000.c
b/drivers/staging/comedi/drivers/me4000.c
index 171749b..d6b7adc 100644
--- a/drivers/staging/comedi/drivers/me4000.c
+++ b/drivers/staging/comedi/drivers/me4000.c
@@ -477,11 +477,6 @@ static int me4000_ai_insn_read(struct comedi_device *dev,
switch (aref) {
case AREF_GROUND:
case AREF_COMMON:
- if (chan >= board->ai_nchan) {
- dev_err(dev->class_dev,
- "Analog input is not available\n");
- return -EINVAL;
- }
entry |= ME4000_AI_LIST_INPUT_SINGLE_ENDED | chan;
break;
--
2.4.3
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