diff options
Diffstat (limited to 'drivers/dma/pxa_dma.c')
| -rw-r--r-- | drivers/dma/pxa_dma.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/dma/pxa_dma.c b/drivers/dma/pxa_dma.c index 94cef2905940..c6e2862896e3 100644 --- a/drivers/dma/pxa_dma.c +++ b/drivers/dma/pxa_dma.c @@ -91,7 +91,8 @@ struct pxad_desc_sw { bool cyclic; struct dma_pool *desc_pool; /* Channel's used allocator */ - struct pxad_desc_hw *hw_desc[]; /* DMA coherent descriptors */ + struct pxad_desc_hw *hw_desc[] __counted_by(nb_desc); + /* DMA coherent descriptors */ }; struct pxad_phy { @@ -739,6 +740,7 @@ pxad_alloc_desc(struct pxad_chan *chan, unsigned int nb_hw_desc) { struct pxad_desc_sw *sw_desc; dma_addr_t dma; + void *desc; int i; sw_desc = kzalloc(struct_size(sw_desc, hw_desc, nb_hw_desc), @@ -748,20 +750,21 @@ pxad_alloc_desc(struct pxad_chan *chan, unsigned int nb_hw_desc) sw_desc->desc_pool = chan->desc_pool; for (i = 0; i < nb_hw_desc; i++) { - sw_desc->hw_desc[i] = dma_pool_alloc(sw_desc->desc_pool, - GFP_NOWAIT, &dma); - if (!sw_desc->hw_desc[i]) { + desc = dma_pool_alloc(sw_desc->desc_pool, GFP_NOWAIT, &dma); + if (!desc) { dev_err(&chan->vc.chan.dev->device, "%s(): Couldn't allocate the %dth hw_desc from dma_pool %p\n", __func__, i, sw_desc->desc_pool); goto err; } + sw_desc->nb_desc++; + sw_desc->hw_desc[i] = desc; + if (i == 0) sw_desc->first = dma; else sw_desc->hw_desc[i - 1]->ddadr = dma; - sw_desc->nb_desc++; } return sw_desc; |