Until now all channels have had read/write attributes. This patch
allows for channels where we can't actually read the value (or for
output devices, write it!)
Signed-off-by: Jonathan Cameron <jic23@xxxxxxxxxx>
---
drivers/staging/iio/industrialio-core.c | 29 +++++++++++++++--------------
1 file changed, 15 insertions(+), 14 deletions(-)
diff --git a/drivers/staging/iio/industrialio-core.c b/drivers/staging/iio/industrialio-core.c
index a4ac061..2b51178 100644
--- a/drivers/staging/iio/industrialio-core.c
+++ b/drivers/staging/iio/industrialio-core.c
@@ -581,20 +581,21 @@ static int iio_device_add_channel_sysfs(struct iio_dev *indio_dev,
if (chan->channel < 0)
return 0;
-
- ret = __iio_add_chan_devattr(iio_data_type_name[chan->processed_val],
- chan,
- &iio_read_channel_info,
- (chan->output ?
- &iio_write_channel_info : NULL),
- 0,
- 0,
- &indio_dev->dev,
- &indio_dev->channel_attr_list);
- if (ret)
- goto error_ret;
- attrcount++;
-
+ if (chan->info_mask & IIO_CHAN_INFO_VALUE_SEPARATE_BIT) {
+ ret = __iio_add_chan_devattr(iio_data_type_name[chan->
+ processed_val],
+ chan,
+ &iio_read_channel_info,
+ (chan->output ?
+ &iio_write_channel_info : NULL),
+ 0,
+ 0,
+ &indio_dev->dev,
+ &indio_dev->channel_attr_list);
+ if (ret)
+ goto error_ret;
+ attrcount++;
+ }
for_each_set_bit_from(i, &chan->info_mask, sizeof(long)*8) {
ret = __iio_add_chan_devattr(iio_chan_info_postfix[i/2],
chan,
--
1.7.9.4
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