diff options
Diffstat (limited to 'drivers/rapidio/devices/tsi721_dma.c')
| -rw-r--r-- | drivers/rapidio/devices/tsi721_dma.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/drivers/rapidio/devices/tsi721_dma.c b/drivers/rapidio/devices/tsi721_dma.c index b490ec36f018..31bb61b43c3f 100644 --- a/drivers/rapidio/devices/tsi721_dma.c +++ b/drivers/rapidio/devices/tsi721_dma.c @@ -887,7 +887,7 @@ int tsi721_register_dma(struct tsi721_device *priv) int i; int nr_channels = 0; int err; - struct rio_mport *mport = priv->mport; + struct rio_mport *mport = &priv->mport; INIT_LIST_HEAD(&mport->dma.channels); @@ -937,3 +937,29 @@ int tsi721_register_dma(struct tsi721_device *priv) return err; } + +void tsi721_unregister_dma(struct tsi721_device *priv) +{ + struct rio_mport *mport = &priv->mport; + struct dma_chan *chan, *_c; + struct tsi721_bdma_chan *bdma_chan; + + tsi721_dma_stop_all(priv); + dma_async_device_unregister(&mport->dma); + + list_for_each_entry_safe(chan, _c, &mport->dma.channels, + device_node) { + bdma_chan = to_tsi721_chan(chan); + if (bdma_chan->active) { + tsi721_bdma_interrupt_enable(bdma_chan, 0); + bdma_chan->active = false; + tsi721_sync_dma_irq(bdma_chan); + tasklet_kill(&bdma_chan->tasklet); + INIT_LIST_HEAD(&bdma_chan->free_list); + kfree(bdma_chan->tx_desc); + tsi721_bdma_ch_free(bdma_chan); + } + + list_del(&chan->device_node); + } +} |