On Mon, Nov 15, 2021 at 4:20 PM Paul Cercueil <paul@xxxxxxxxxxxxxxx> wrote:
>
> From: Alexandru Ardelean <alexandru.ardelean@xxxxxxxxxx>
>
> A part of the logic in the iio_dma_buffer_exit() is required for the change
> to add mmap support to IIO buffers.
> This change splits the logic into a separate function, which will be
> re-used later.
>
Not sure how the protocol is here, since my old @analog.com email
isn't working anymore.
But:
Signed-off-by: Alexandru Ardelean <ardeleanalex@xxxxxxxxx>
Thanks :)
Alex
> Signed-off-by: Alexandru Ardelean <alexandru.ardelean@xxxxxxxxxx>
> Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
> ---
> drivers/iio/buffer/industrialio-buffer-dma.c | 39 +++++++++++---------
> 1 file changed, 22 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/iio/buffer/industrialio-buffer-dma.c b/drivers/iio/buffer/industrialio-buffer-dma.c
> index eeeed6b2e0cf..eb8cfd3af030 100644
> --- a/drivers/iio/buffer/industrialio-buffer-dma.c
> +++ b/drivers/iio/buffer/industrialio-buffer-dma.c
> @@ -358,6 +358,27 @@ int iio_dma_buffer_request_update(struct iio_buffer *buffer)
> }
> EXPORT_SYMBOL_GPL(iio_dma_buffer_request_update);
>
> +static void iio_dma_buffer_fileio_free(struct iio_dma_buffer_queue *queue)
> +{
> + unsigned int i;
> +
> + spin_lock_irq(&queue->list_lock);
> + for (i = 0; i < ARRAY_SIZE(queue->fileio.blocks); i++) {
> + if (!queue->fileio.blocks[i])
> + continue;
> + queue->fileio.blocks[i]->state = IIO_BLOCK_STATE_DEAD;
> + }
> + spin_unlock_irq(&queue->list_lock);
> +
> + for (i = 0; i < ARRAY_SIZE(queue->fileio.blocks); i++) {
> + if (!queue->fileio.blocks[i])
> + continue;
> + iio_buffer_block_put(queue->fileio.blocks[i]);
> + queue->fileio.blocks[i] = NULL;
> + }
> + queue->fileio.active_block = NULL;
> +}
> +
> static void iio_dma_buffer_submit_block(struct iio_dma_buffer_queue *queue,
> struct iio_dma_buffer_block *block)
> {
> @@ -681,25 +702,9 @@ EXPORT_SYMBOL_GPL(iio_dma_buffer_init);
> */
> void iio_dma_buffer_exit(struct iio_dma_buffer_queue *queue)
> {
> - unsigned int i;
> -
> mutex_lock(&queue->lock);
>
> - spin_lock_irq(&queue->list_lock);
> - for (i = 0; i < ARRAY_SIZE(queue->fileio.blocks); i++) {
> - if (!queue->fileio.blocks[i])
> - continue;
> - queue->fileio.blocks[i]->state = IIO_BLOCK_STATE_DEAD;
> - }
> - spin_unlock_irq(&queue->list_lock);
> -
> - for (i = 0; i < ARRAY_SIZE(queue->fileio.blocks); i++) {
> - if (!queue->fileio.blocks[i])
> - continue;
> - iio_buffer_block_put(queue->fileio.blocks[i]);
> - queue->fileio.blocks[i] = NULL;
> - }
> - queue->fileio.active_block = NULL;
> + iio_dma_buffer_fileio_free(queue);
> queue->ops = NULL;
>
> mutex_unlock(&queue->lock);
> --
> 2.33.0
>
