Add a new iio_for_each_active_channel() helper to iterate over the active channels. Also add an helper to access masklength using ACCESS_PRIVATE(). End goal is to annotate that variable as __private so that we can get checker warnings if drivers directly access that variable. Signed-off-by: Nuno Sa <nuno.sa@xxxxxxxxxx> --- include/linux/iio/iio.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index 894309294182..a63888746707 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -860,6 +860,12 @@ ssize_t iio_format_value(char *buf, unsigned int type, int size, int *vals); int iio_str_to_fixpoint(const char *str, int fract_mult, int *integer, int *fract); +#define iio_dev_masklength(indio_dev) ACCESS_PRIVATE(indio_dev, masklength) + +#define iio_for_each_active_channel(indio_dev, bit) \ + for_each_set_bit((bit), (indio_dev)->active_scan_mask, \ + iio_dev_masklength(indio_dev)) + /** * IIO_DEGREE_TO_RAD() - Convert degree to rad * @deg: A value in degree -- 2.45.2
