linux-kernel - [PATCH] dmaengine: Remove redundant initialization of variable err

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Message-Id: <20211015123447.27560-1-colin.king@canonical.com>
Date:   Fri, 15 Oct 2021 13:34:47 +0100
From:   Colin King <colin.king@...onical.com>
To:     Vinod Koul <vkoul@...nel.org>, dmaengine@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] dmaengine: Remove redundant initialization of variable err

From: Colin Ian King <colin.king@...onical.com>

The variable err is being initialized with a value that is never read, it
is being updated later on. The assignment is redundant and can be removed
and move the declaration into the local scope.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/dma/dmaengine.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index af3ee288bc11..d9f7c097cfd6 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -695,13 +695,12 @@ static struct dma_chan *find_candidate(struct dma_device *device,
  */
 struct dma_chan *dma_get_slave_channel(struct dma_chan *chan)
 {
-	int err = -EBUSY;
-
 	/* lock against __dma_request_channel */
 	mutex_lock(&dma_list_mutex);
 
 	if (chan->client_count == 0) {
 		struct dma_device *device = chan->device;
+		int err;
 
 		dma_cap_set(DMA_PRIVATE, device->cap_mask);
 		device->privatecnt++;
-- 
2.32.0