[PATCH v4 3/4] dw_dmac: fill individual length of descriptor

Andy Shevchenko
2013-01-25T09:48:27Z

It will be useful to have the length of the transfer in the descriptor. The
cyclic transfer functions remained untouched.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
---
drivers/dma/dw_dmac.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
index 7b5a088..3b788c8 100644
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c
@@ -759,6 +759,7 @@ dwc_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
desc->lli.dar = dest + offset;
desc->lli.ctllo = ctllo;
desc->lli.ctlhi = xfer_count;
+ desc->len = xfer_count << src_width;

if (!first) {
first = desc;
@@ -857,6 +858,7 @@ slave_sg_todev_fill_desc:
}

desc->lli.ctlhi = dlen >> mem_width;
+ desc->len = dlen;

if (!first) {
first = desc;
@@ -915,6 +917,7 @@ slave_sg_fromdev_fill_desc:
len = 0;
}
desc->lli.ctlhi = dlen >> reg_width;
+ desc->len = dlen;

if (!first) {
first = desc;
--
1.7.10.4