[PATCH] dmaengine: dw-axi-dmac: drop redundant DMAC enable in block start

tze.yee.ng@altera.com posted 1 patch 5 days, 20 hours ago
drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c | 2 --
1 file changed, 2 deletions(-)
[PATCH] dmaengine: dw-axi-dmac: drop redundant DMAC enable in block start
Posted by tze.yee.ng@altera.com 5 days, 20 hours ago
From: Niravkumar L Rabara <niravkumarlaxmidas.rabara@altera.com>

axi_chan_block_xfer_start() runs after the controller is already enabled,
so calling axi_dma_enable() again is unnecessary. Remove the redundant
enable call to keep the transfer start path clean and avoid repeated no-op
programming.

Signed-off-by: Niravkumar L Rabara <niravkumarlaxmidas.rabara@altera.com>
Signed-off-by: Tze Yee Ng <tze.yee.ng@altera.com>
---
 drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
index 4d53f077e9d2..f7a50f470461 100644
--- a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
+++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
@@ -437,8 +437,6 @@ static void axi_chan_block_xfer_start(struct axi_dma_chan *chan,
 		return;
 	}
 
-	axi_dma_enable(chan->chip);
-
 	config.dst_multblk_type = DWAXIDMAC_MBLK_TYPE_LL;
 	config.src_multblk_type = DWAXIDMAC_MBLK_TYPE_LL;
 	config.tt_fc = DWAXIDMAC_TT_FC_MEM_TO_MEM_DMAC;
-- 
2.43.7