staging:iio: Drop buffer busy flag

The flag is only cleared, never set or tested, so it is safe to remove it.

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>

diff --git a/drivers/staging/iio/buffer.h b/drivers/staging/iio/buffer.h
index 44593b28b36fbb0f86abbe9b3319ed91ce89e7f3..eb4938cf6ab401df07d9682ed65abc0d68feb987 100644 (file)
--- a/drivers/staging/iio/buffer.h
+++ b/drivers/staging/iio/buffer.h
@@ -79,7 +79,6 @@ struct iio_buffer_access_funcs {
  *                     created from the iio_chan_info array.
  * @pollq:             [INTERN] wait queue to allow for polling on the buffer.
  * @stufftoread:       [INTERN] flag to indicate new data.
- * @flags:             [INTERN] file ops related flags including busy flag.
  * @demux_list:                [INTERN] list of operations required to demux the scan.
  * @demux_bounce:      [INTERN] buffer for doing gather from incoming scan.
  **/
@@ -95,7 +94,6 @@ struct iio_buffer {
        struct attribute_group                  scan_el_group;
        wait_queue_head_t                       pollq;
        bool                                    stufftoread;
-       unsigned long                           flags;
        const struct attribute_group *attrs;
        struct list_head                        demux_list;
        unsigned char                           *demux_bounce;

diff --git a/drivers/staging/iio/industrialio-buffer.c b/drivers/staging/iio/industrialio-buffer.c
index 59472890cb2a280786b77db12cb63eb9f9bbd79c..4c6d183509f5713cb31c75117e9966722171bbf3 100644 (file)
--- a/drivers/staging/iio/industrialio-buffer.c
+++ b/drivers/staging/iio/industrialio-buffer.c
@@ -80,7 +80,6 @@ void iio_chrdev_buffer_release(struct iio_dev *indio_dev)
 
        if (!rb)
                return;
-       clear_bit(IIO_BUSY_BIT_POS, &rb->flags);
        if (rb->access->unmark_in_use)
                rb->access->unmark_in_use(rb);
 }