Subject: [PATCH 4/5] dmaengine: ste_dma40: Do not configure channels during an channel allocation

From: [email-masked] (Lee Jones)
Date: Tue, 9 Apr 2013 08:11:54 +0100

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 <[email-masked]>
Cc: Dan Williams <[email-masked]>
Cc: Per Forlin <[email-masked]>
Signed-off-by: Lee Jones <[email-masked]>
---
 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)
 	}
 
 	pm_runtime_get_sync(d40c->base->dev);
-	/* Fill in basic CFG register values */
-	d40_phy_cfg(&d40c->dma_cfg, &d40c->src_def_cfg,
-		    &d40c->dst_def_cfg, chan_is_logical(d40c));
 
 	d40_set_prio_realtime(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;
-- 
1.7.10.4