diff options
| -rw-r--r-- | drivers/dma/sa11x0-dma.c | 45 |
1 files changed, 29 insertions, 16 deletions
diff --git a/drivers/dma/sa11x0-dma.c b/drivers/dma/sa11x0-dma.c index 5f1d2e670837..db4fcbd80c7d 100644 --- a/drivers/dma/sa11x0-dma.c +++ b/drivers/dma/sa11x0-dma.c @@ -416,27 +416,47 @@ static enum dma_status sa11x0_dma_tx_status(struct dma_chan *chan, struct sa11x0_dma_chan *c = to_sa11x0_dma_chan(chan); struct sa11x0_dma_dev *d = to_sa11x0_dma(chan->device); struct sa11x0_dma_phy *p; - struct sa11x0_dma_desc *txd; + struct virt_dma_desc *vd; unsigned long flags; enum dma_status ret; - size_t bytes = 0; ret = dma_cookie_status(&c->vc.chan, cookie, state); if (ret == DMA_SUCCESS) return ret; + if (!state) + return c->status; + spin_lock_irqsave(&c->vc.lock, flags); p = c->phy; - ret = c->status; - if (p) { - dma_addr_t addr = sa11x0_dma_pos(p); - dev_vdbg(d->slave.dev, "tx_status: addr:%x\n", addr); + /* + * If the cookie is on our issue queue, then the residue is + * its total size. + */ + vd = vchan_find_desc(&c->vc, cookie); + if (vd) { + state->residue = container_of(vd, struct sa11x0_dma_desc, vd)->size; + } else if (!p) { + state->residue = 0; + } else { + struct sa11x0_dma_desc *txd; + size_t bytes = 0; + + if (p->txd_done && p->txd_done->vd.tx.cookie == cookie) + txd = p->txd_done; + else if (p->txd_load && p->txd_load->vd.tx.cookie == cookie) + txd = p->txd_load; + else + txd = NULL; - txd = p->txd_done; + ret = c->status; if (txd) { + dma_addr_t addr = sa11x0_dma_pos(p); unsigned i; + dev_vdbg(d->slave.dev, "tx_status: addr:%x\n", addr); + for (i = 0; i < txd->sglen; i++) { dev_vdbg(d->slave.dev, "tx_status: [%u] %x+%x\n", i, txd->sg[i].addr, txd->sg[i].len); @@ -459,18 +479,11 @@ static enum dma_status sa11x0_dma_tx_status(struct dma_chan *chan, bytes += txd->sg[i].len; } } - if (txd != p->txd_load && p->txd_load) - bytes += p->txd_load->size; - } - list_for_each_entry(txd, &c->vc.desc_issued, vd.node) { - bytes += txd->size; + state->residue = bytes; } spin_unlock_irqrestore(&c->vc.lock, flags); - if (state) - state->residue = bytes; - - dev_vdbg(d->slave.dev, "tx_status: bytes 0x%zx\n", bytes); + dev_vdbg(d->slave.dev, "tx_status: bytes 0x%zx\n", state->residue); return ret; } |