diff options
| -rw-r--r-- | drivers/staging/comedi/drivers/mite.c | 33 |
1 files changed, 16 insertions, 17 deletions
diff --git a/drivers/staging/comedi/drivers/mite.c b/drivers/staging/comedi/drivers/mite.c index 14b5345a9357..8b0f875972f5 100644 --- a/drivers/staging/comedi/drivers/mite.c +++ b/drivers/staging/comedi/drivers/mite.c @@ -371,16 +371,24 @@ struct mite_ring *mite_alloc_ring(struct mite *mite) }; EXPORT_SYMBOL_GPL(mite_alloc_ring); +static void mite_free_dma_descs(struct mite_ring *ring) +{ + struct mite_dma_desc *descs = ring->descs; + + if (descs) { + dma_free_coherent(ring->hw_dev, + ring->n_links * sizeof(*descs), + descs, ring->dma_addr); + ring->descs = NULL; + ring->dma_addr = 0; + ring->n_links = 0; + } +} + void mite_free_ring(struct mite_ring *ring) { if (ring) { - if (ring->descs) { - dma_free_coherent(ring->hw_dev, - ring->n_links * - sizeof(struct mite_dma_desc), - ring->descs, - ring->dma_addr); - } + mite_free_dma_descs(ring); put_device(ring->hw_dev); kfree(ring); } @@ -467,16 +475,7 @@ int mite_buf_change(struct mite_ring *ring, struct comedi_async *async = s->async; unsigned int n_links; - if (ring->descs) { - dma_free_coherent(ring->hw_dev, - ring->n_links * - sizeof(struct mite_dma_desc), - ring->descs, - ring->dma_addr); - } - ring->descs = NULL; - ring->dma_addr = 0; - ring->n_links = 0; + mite_free_dma_descs(ring); if (async->prealloc_bufsz == 0) return 0; |