diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2009-09-08 23:01:38 +0400 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2009-09-09 04:30:24 +0400 |
| commit | ad643f54c8514998333bc6c7b201fda2267496be (patch) | |
| tree | c92bbecd74912ada08dfa94662b52e63d4c5df46 /drivers/dma/ioat/dma.c | |
| parent | 345d852391cf3fdc73f23a9ca522c6e7b5eb5a52 (diff) | |
| download | linux-ad643f54c8514998333bc6c7b201fda2267496be.tar.xz | |
ioat1: trim ioat_dma_desc_sw
Save 4 bytes per software descriptor by transmitting tx_cnt in an unused
portion of the hardware descriptor.
Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dma/ioat/dma.c')
| -rw-r--r-- | drivers/dma/ioat/dma.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/dma/ioat/dma.c b/drivers/dma/ioat/dma.c index abc96c4c0796..f59b6f42f866 100644 --- a/drivers/dma/ioat/dma.c +++ b/drivers/dma/ioat/dma.c @@ -396,7 +396,7 @@ static dma_cookie_t ioat1_tx_submit(struct dma_async_tx_descriptor *tx) dump_desc_dbg(ioat, chain_tail); dump_desc_dbg(ioat, first); - ioat->pending += desc->tx_cnt; + ioat->pending += desc->hw->tx_cnt; if (ioat->pending >= ioat_pending_level) __ioat1_dma_memcpy_issue_pending(ioat); spin_unlock_bh(&ioat->desc_lock); @@ -655,11 +655,11 @@ ioat1_dma_prep_memcpy(struct dma_chan *c, dma_addr_t dma_dest, spin_unlock_bh(&ioat->desc_lock); desc->txd.flags = flags; - desc->tx_cnt = tx_cnt; desc->len = total_len; list_splice(&chain, &desc->txd.tx_list); hw->ctl_f.int_en = !!(flags & DMA_PREP_INTERRUPT); hw->ctl_f.compl_write = 1; + hw->tx_cnt = tx_cnt; dump_desc_dbg(ioat, desc); return &desc->txd; |