[PATCH 4/5] dmaengine: ste_dma40: Do not configure channels duringan channel allocation

From: Lee Jones
Date: Tue Apr 09 2013 - 03:12:06 EST

According to the DMA documentation allocating a channel and configuring
it are two separate actions. By removing the configuration code from the
channel allocation path we lighten the burden on the information required to
successfully allocate a channel.

Cc: Vinod Koul <vinod.koul@xxxxxxxxx>
Cc: Dan Williams <djbw@xxxxxx>
Cc: Per Forlin <per.forlin@xxxxxxxxxxxxxx>
Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>
drivers/dma/ste_dma40.c | 6 ------
1 file changed, 6 deletions(-)

diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index ecca492..3543ea4 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -2471,16 +2471,10 @@ static int d40_alloc_chan_resources(struct dma_chan *chan)

- /* Fill in basic CFG register values */
- d40_phy_cfg(&d40c->dma_cfg, &d40c->src_def_cfg,
- &d40c->dst_def_cfg, chan_is_logical(d40c));


if (chan_is_logical(d40c)) {
- d40_log_cfg(&d40c->dma_cfg,
- &d40c->log_def.lcsp1, &d40c->log_def.lcsp3);
if (d40c->dma_cfg.dir == STEDMA40_PERIPH_TO_MEM)
d40c->lcpa = d40c->base->lcpa_base +
d40c->dma_cfg.src_dev_type * D40_LCPA_CHAN_SIZE;
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/