static struct ep93xx_dma_desc *
ep93xx_dma_get_active(struct ep93xx_dma_chan *edmac)
{
- if (list_empty(&edmac->active))
- return NULL;
-
- return list_first_entry(&edmac->active, struct ep93xx_dma_desc, node);
+ return list_first_entry_or_null(&edmac->active,
+ struct ep93xx_dma_desc, node);
}
/**
{
struct ep93xx_dma_chan *edmac = (struct ep93xx_dma_chan *)data;
struct ep93xx_dma_desc *desc, *d;
- dma_async_tx_callback callback = NULL;
- void *callback_param = NULL;
+ struct dmaengine_desc_callback cb;
LIST_HEAD(list);
+ memset(&cb, 0, sizeof(cb));
spin_lock_irq(&edmac->lock);
/*
* If dma_terminate_all() was called before we get to run, the active
dma_cookie_complete(&desc->txd);
list_splice_init(&edmac->active, &list);
}
- callback = desc->txd.callback;
- callback_param = desc->txd.callback_param;
+ dmaengine_desc_get_callback(&desc->txd, &cb);
}
spin_unlock_irq(&edmac->lock);
ep93xx_dma_desc_put(edmac, desc);
}
- if (callback)
- callback(callback_param);
+ dmaengine_desc_callback_invoke(&cb, NULL);
}
static irqreturn_t ep93xx_dma_interrupt(int irq, void *dev_id)
first = NULL;
for_each_sg(sgl, sg, sg_len, i) {
- size_t sg_len = sg_dma_len(sg);
+ size_t len = sg_dma_len(sg);
- if (sg_len > DMA_MAX_CHAN_BYTES) {
- dev_warn(chan2dev(edmac), "too big transfer size %d\n",
- sg_len);
+ if (len > DMA_MAX_CHAN_BYTES) {
+ dev_warn(chan2dev(edmac), "too big transfer size %zu\n",
+ len);
goto fail;
}
desc->src_addr = edmac->runtime_addr;
desc->dst_addr = sg_dma_address(sg);
}
- desc->size = sg_len;
+ desc->size = len;
if (!first)
first = desc;
}
if (period_len > DMA_MAX_CHAN_BYTES) {
- dev_warn(chan2dev(edmac), "too big period length %d\n",
+ dev_warn(chan2dev(edmac), "too big period length %zu\n",
period_len);
return NULL;
}