From: Julia Lawall <Julia.Lawall@lip6.fr>
Date: Sun, 23 Dec 2018 08:57:07 +0000 (+0100)
Subject: dmaengine: dw: drop useless LIST_HEAD
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=1bd09f869f9b294b5645e2ac153ee59604ef959e;p=linux.git

dmaengine: dw: drop useless LIST_HEAD

Drop LIST_HEAD where the variable it declares is never used.

Commit ab703f818ac3 ("dmaengine: dw: lazy allocation of dma
descriptors") removed the uses, but not the declaration.

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

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

Fixes: ab703f818ac3 ("dmaengine: dw: lazy allocation of dma descriptors")
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
---

diff --git a/drivers/dma/dw/core.c b/drivers/dma/dw/core.c
index dc053e62f8945..290d21be4d4cd 100644
--- a/drivers/dma/dw/core.c
+++ b/drivers/dma/dw/core.c
@@ -1150,7 +1150,6 @@ static void dwc_free_chan_resources(struct dma_chan *chan)
 	struct dw_dma_chan	*dwc = to_dw_dma_chan(chan);
 	struct dw_dma		*dw = to_dw_dma(chan->device);
 	unsigned long		flags;
-	LIST_HEAD(list);
 
 	dev_dbg(chan2dev(chan), "%s: descs allocated=%u\n", __func__,
 			dwc->descs_allocated);