tree 1563ca434350c338176f0c9e6cc4648882ad74d0
parent 869871b58c7f7c26ccf7a89cbe599e9b963b8e69
author Lars-Peter Clausen <lars@metafoo.de> 1324304629 +0100
committer Greg Kroah-Hartman <gregkh@suse.de> 1324589890 -0800

staging:iio: Drop {mark,unmark}_in_use callbacks

These callbacks are currently used by the individual buffer implementations to
ensure that the request_update callback is not issued while the buffer is in use.
But the core already provides sufficient measures to prevent this from happening
in the first place. So it is safe to remove them.

There is one functional change due to this patch. Since the buffer is no longer
marked as in use when the chrdev is opened, it is now possible to enable the
buffer while it is opened. This did not work before, because mark_param_change
did fail if the buffer was marked as in use.

Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>