Author: Tina Johnson <tinajohnson.1234@gmail.com> Variable len is used only to store the return value. Hence len is removed and the return statement modified. Coccinelle was used to detect such removable variables: @rule1@ identifier ret; expression e; @@ -ret = +return e; -return ret; Signed-off-by: Tina Johnson Signed-off-by: Greg Kroah-Hartman — drivers/staging/iio/meter/ade7758_core.c | 5 ++— 1 …