From: Kedareswara rao Appana <appana.durga.rao@xilinx.com>
Date: Wed, 3 Jan 2018 06:42:11 +0000 (+0530)
Subject: dmaengine: xilinx_dma: Free BD consistent memory
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=0e847d44b3f2f7ab5d4a826f25be9b24a632ce9e;p=openwrt%2Fstaging%2Fblogic.git

dmaengine: xilinx_dma: Free BD consistent memory

Free BD consistent memory while freeing the channel
i.e in free_chan_resources.

Signed-off-by: Radhey Shyam Pandey <radheys@xilinx.com>
Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---

diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c
index 855ea14f6877..27b523530c4a 100644
--- a/drivers/dma/xilinx/xilinx_dma.c
+++ b/drivers/dma/xilinx/xilinx_dma.c
@@ -764,6 +764,11 @@ static void xilinx_dma_free_chan_resources(struct dma_chan *dchan)
 		INIT_LIST_HEAD(&chan->free_seg_list);
 		spin_unlock_irqrestore(&chan->lock, flags);
 
+		/* Free memory that is allocated for BD */
+		dma_free_coherent(chan->dev, sizeof(*chan->seg_v) *
+				  XILINX_DMA_NUM_DESCS, chan->seg_v,
+				  chan->seg_p);
+
 		/* Free Memory that is allocated for cyclic DMA Mode */
 		dma_free_coherent(chan->dev, sizeof(*chan->cyclic_seg_v),
 				  chan->cyclic_seg_v, chan->cyclic_seg_p);