linux-kernel - [PATCH 17/20] dmaengine: pl330: drop useless LIST

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Date:   Sun, 23 Dec 2018 09:57:12 +0100
From:   Julia Lawall <Julia.Lawall@...6.fr>
To:     Dan Williams <dan.j.williams@...el.com>
Cc:     kernel-janitors@...r.kernel.org, Vinod Koul <vkoul@...nel.org>,
        dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 17/20] dmaengine: pl330: drop useless LIST_HEAD

Drop LIST_HEAD where the variable it declares is never used.

The variable has not been used since the function was introduced
in 740aa95703c5 ("dmaengine: pl330: Split device_control").

The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
identifier x;
@@
- LIST_HEAD(x);
  ... when != x
// </smpl>

Fixes: 740aa95703c5 ("dmaengine: pl330: Split device_control")
Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

---
Successfully 0-day tested on 151 configurations.

 drivers/dma/pl330.c |    1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index cff1b143fff5..eec79fdf27a5 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -2267,7 +2267,6 @@ static int pl330_terminate_all(struct dma_chan *chan)
 	struct dma_pl330_desc *desc;
 	unsigned long flags;
 	struct pl330_dmac *pl330 = pch->dmac;
-	LIST_HEAD(list);
 	bool power_down = false;
 
 	pm_runtime_get_sync(pl330->ddma.dev);