Make sure that only the state of the channels configured as outputs are
updated.
Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Ian Abbott <abbotti@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/comedi/drivers.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/comedi/drivers.c b/drivers/staging/comedi/drivers.c
index 75d877b..777be6d 100644
--- a/drivers/staging/comedi/drivers.c
+++ b/drivers/staging/comedi/drivers.c
@@ -198,7 +198,7 @@ EXPORT_SYMBOL_GPL(comedi_dio_insn_config);
unsigned int comedi_dio_update_state(struct comedi_subdevice *s,
unsigned int *data)
{
- unsigned int mask = data[0];
+ unsigned int mask = data[0] & s->io_bits; /* outputs only */
unsigned int bits = data[1];
if (mask) {
--
1.8.3.2
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