linux-kernel - [PATCH -next 5/8] dmaengine: xilinx_dma: Remove residue from channel data

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Message-Id: <1567701424-25658-6-git-send-email-radhey.shyam.pandey@xilinx.com>
Date:   Thu,  5 Sep 2019 22:07:01 +0530
From:   Radhey Shyam Pandey <radhey.shyam.pandey@...inx.com>
To:     vkoul@...nel.org, dan.j.williams@...el.com,
        michal.simek@...inx.com, nick.graumann@...il.com,
        andrea.merello@...il.com, appana.durga.rao@...inx.com,
        mcgrof@...nel.org
Cc:     dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org,
        Radhey Shyam Pandey <radhey.shyam.pandey@...inx.com>
Subject: [PATCH -next 5/8] dmaengine: xilinx_dma: Remove residue from channel data

From: Nicholas Graumann <nick.graumann@...il.com>

Now that we track residues for each descriptor, there is no need to keep
track of the residue for each channel.

Signed-off-by: Nicholas Graumann <nick.graumann@...il.com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@...inx.com>
---
 drivers/dma/xilinx/xilinx_dma.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c
index 3f2e0ad..bf3fa2e 100644
--- a/drivers/dma/xilinx/xilinx_dma.c
+++ b/drivers/dma/xilinx/xilinx_dma.c
@@ -340,7 +340,6 @@ struct xilinx_dma_tx_descriptor {
  * @desc_pendingcount: Descriptor pending count
  * @ext_addr: Indicates 64 bit addressing is supported by dma channel
  * @desc_submitcount: Descriptor h/w submitted count
- * @residue: Residue for AXI DMA
  * @seg_v: Statically allocated segments base
  * @seg_p: Physical allocated segments base
  * @cyclic_seg_v: Statically allocated segment base for cyclic transfers
@@ -377,7 +376,6 @@ struct xilinx_dma_chan {
 	u32 desc_pendingcount;
 	bool ext_addr;
 	u32 desc_submitcount;
-	u32 residue;
 	struct xilinx_axidma_tx_segment *seg_v;
 	dma_addr_t seg_p;
 	struct xilinx_axidma_tx_segment *cyclic_seg_v;
@@ -1068,11 +1066,11 @@ static enum dma_status xilinx_dma_tx_status(struct dma_chan *dchan,
 
 	desc = list_last_entry(&chan->active_list,
 			       struct xilinx_dma_tx_descriptor, node);
-	chan->residue = xilinx_dma_get_residue(chan, desc);
+	desc->residue = xilinx_dma_get_residue(chan, desc);
 
 	spin_unlock_irqrestore(&chan->lock, flags);
 
-	dma_set_residue(txstate, chan->residue);
+	dma_set_residue(txstate, desc->residue);
 
 	return ret;
 }
-- 
2.7.4