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host: fix playback failed from second time issue 

For host with gateway, we need create extra dma_sg_elem *
period_count for hd->config.element_list, and free them
at host_reset() time, otherwise, the hd->local elements
may be broken if we use them for config.element_list.

Signed-off-by: Keyon Jie <yang.jie@linux.intel.com>
This commit is contained in:
Keyon Jie 2018-02-09 20:00:08 +08:00 committed by Liam Girdwood
parent b0f8e5d5c2
commit bad1261098
1 changed files with 41 additions and 7 deletions
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48
src/audio/host.c
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@ -411,6 +411,10 @@ static int create_local_elems(struct comp_dev *dev)
{
struct host_data *hd = comp_get_drvdata(dev);
struct dma_sg_elem *e;
#if defined CONFIG_DMA_GW
struct dma_sg_elem *ec;
struct dma_sg_elem *local_elem;
#endif
struct list_item *elist;
struct list_item *tlist;
int i;
@ -434,13 +438,21 @@ static int create_local_elems(struct comp_dev *dev)
list_item_append(&e->list, &hd->local.elem_list);
#if defined CONFIG_DMA_GW
/*
* for dma gateway, we don't allocate extra sg elements, so,
* just reuse local elements for config.elem_list.
* for dma gateway, we don't allocate extra sg elements in
* host_buffer, so, we need create them here and add them
* to config.elem_list.
* And, as the first element has been added at host_new, so
* add from the 2nd element here
* add from the 2nd element here.
*/
if (i >= 1)
list_item_append(&e->list, &hd->config.elem_list);
if (!i)
continue;
/* allocate new host DMA elem and add it to our list */
ec = rzalloc(RZONE_RUNTIME, RFLAGS_NONE, sizeof(*ec));
if (!ec)
goto unwind;
*ec = *e;
list_item_append(&ec->list, &hd->config.elem_list);
#endif
}
@ -452,6 +464,15 @@ unwind:
list_item_del(&e->list);
rfree(e);
}
#if defined CONFIG_DMA_GW
local_elem = list_first_item(&hd->config.elem_list,
struct dma_sg_elem, list);
list_for_item_safe(elist, tlist, &local_elem->list) {
ec = container_of(elist, struct dma_sg_elem, list);
list_item_del(&ec->list);
rfree(ec);
}
#endif
trace_host_error("el0");
return -ENOMEM;
}
@ -712,7 +733,6 @@ static int host_reset(struct comp_dev *dev)
/* free all host DMA elements */
list_for_item_safe(elist, tlist, &hd->host.elem_list) {
e = container_of(elist, struct dma_sg_elem, list);
list_item_del(&e->list);
rfree(e);
@ -720,7 +740,6 @@ static int host_reset(struct comp_dev *dev)
/* free all local DMA elements */
list_for_item_safe(elist, tlist, &hd->local.elem_list) {
e = container_of(elist, struct dma_sg_elem, list);
list_item_del(&e->list);
rfree(e);
@ -729,6 +748,21 @@ static int host_reset(struct comp_dev *dev)
#if defined CONFIG_DMA_GW
dma_stop(hd->dma, hd->chan);
dma_channel_put(hd->dma, hd->chan);
e = list_first_item(&hd->config.elem_list,
struct dma_sg_elem, list);
/*
* here free dma_sg_elem those allocated in create_local_elems(),
* we should keep header and the first local elem after reset
*/
list_for_item_safe(elist, tlist, &e->list) {
e = container_of(elist, struct dma_sg_elem, list);
/* should not free the header, finished */
if (elist == &hd->config.elem_list)
break;
list_item_del(&e->list);
rfree(e);
}
#endif
host_pointer_reset(dev);