[PATCH] iio: backend: document @chan in iio_backend_oversampling_ratio_set kernel-doc comment

[Sukrut Heroorkar]

Buidling with W=1 reports:
Warning: drivers/iio/industrialio-backend.c:727 function parameter 'chan'
not described in 'iio_backend_oversampling_ratio_set'

The @chan parameter was added when iio_backend_oversampling_ratio_set() was
updated so the contexts could specify the channel, but the parameter was
never documented. Document @chan to silence this warning.

Fixes: 97e6882ed1a1 ("iio: backend: update iio_backend_oversampling_ratio_set")
Signed-off-by: Sukrut Heroorkar <hsukrut3@xxxxxxxxx>
---
 drivers/iio/industrialio-backend.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/iio/industrialio-backend.c b/drivers/iio/industrialio-backend.c
index 23760652a046..937f4ef38e1e 100644
--- a/drivers/iio/industrialio-backend.c
+++ b/drivers/iio/industrialio-backend.c
@@ -717,6 +717,7 @@ EXPORT_SYMBOL_NS_GPL(iio_backend_data_size_set, "IIO_BACKEND");
 /**
  * iio_backend_oversampling_ratio_set - set the oversampling ratio
  * @back: Backend device
+ * @chan: Channel number
  * @ratio: The oversampling ratio - value 1 corresponds to no oversampling.
  *
  * Return:
-- 
2.43.0