diff options
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/sprd-dma.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/dma/sprd-dma.c b/drivers/dma/sprd-dma.c index a4a91f233121..8546ad034720 100644 --- a/drivers/dma/sprd-dma.c +++ b/drivers/dma/sprd-dma.c @@ -212,6 +212,7 @@ struct sprd_dma_dev { struct sprd_dma_chn channels[0]; }; +static void sprd_dma_free_desc(struct virt_dma_desc *vd); static bool sprd_dma_filter_fn(struct dma_chan *chan, void *param); static struct of_dma_filter_info sprd_dma_info = { .filter_fn = sprd_dma_filter_fn, @@ -613,12 +614,19 @@ static int sprd_dma_alloc_chan_resources(struct dma_chan *chan) static void sprd_dma_free_chan_resources(struct dma_chan *chan) { struct sprd_dma_chn *schan = to_sprd_dma_chan(chan); + struct virt_dma_desc *cur_vd = NULL; unsigned long flags; spin_lock_irqsave(&schan->vc.lock, flags); + if (schan->cur_desc) + cur_vd = &schan->cur_desc->vd; + sprd_dma_stop(schan); spin_unlock_irqrestore(&schan->vc.lock, flags); + if (cur_vd) + sprd_dma_free_desc(cur_vd); + vchan_free_chan_resources(&schan->vc); pm_runtime_put(chan->device->dev); } @@ -1031,15 +1039,22 @@ static int sprd_dma_resume(struct dma_chan *chan) static int sprd_dma_terminate_all(struct dma_chan *chan) { struct sprd_dma_chn *schan = to_sprd_dma_chan(chan); + struct virt_dma_desc *cur_vd = NULL; unsigned long flags; LIST_HEAD(head); spin_lock_irqsave(&schan->vc.lock, flags); + if (schan->cur_desc) + cur_vd = &schan->cur_desc->vd; + sprd_dma_stop(schan); vchan_get_all_descriptors(&schan->vc, &head); spin_unlock_irqrestore(&schan->vc.lock, flags); + if (cur_vd) + sprd_dma_free_desc(cur_vd); + vchan_dma_desc_free_list(&schan->vc, &head); return 0; } |