linux-kernel - [PATCH -next] dmaengine: ti: k3-udma: Use PTR_ERR_OR

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Message-ID: <1588757146-38858-1-git-send-email-zou_wei@huawei.com>
Date:   Wed, 6 May 2020 17:25:46 +0800
From:   Samuel Zou <zou_wei@...wei.com>
To:     <dan.j.williams@...el.com>, <vkoul@...nel.org>
CC:     <dmaengine@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Samuel Zou <zou_wei@...wei.com>
Subject: [PATCH -next] dmaengine: ti: k3-udma: Use PTR_ERR_OR_ZERO() to simplify code

Fixes coccicheck warnings:

drivers/dma/ti/k3-udma.c:1294:1-3: WARNING: PTR_ERR_OR_ZERO can be used
drivers/dma/ti/k3-udma.c:1311:1-3: WARNING: PTR_ERR_OR_ZERO can be used
drivers/dma/ti/k3-udma.c:1376:1-3: WARNING: PTR_ERR_OR_ZERO can be used

Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Samuel Zou <zou_wei@...wei.com>
---
 drivers/dma/ti/k3-udma.c | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c
index 0a04174..f5775ca 100644
--- a/drivers/dma/ti/k3-udma.c
+++ b/drivers/dma/ti/k3-udma.c
@@ -1291,10 +1291,8 @@ static int udma_get_tchan(struct udma_chan *uc)
 	}
 
 	uc->tchan = __udma_reserve_tchan(ud, uc->config.channel_tpl, -1);
-	if (IS_ERR(uc->tchan))
-		return PTR_ERR(uc->tchan);
 
-	return 0;
+	return PTR_ERR_OR_ZERO(uc->tchan);
 }
 
 static int udma_get_rchan(struct udma_chan *uc)
@@ -1308,10 +1306,8 @@ static int udma_get_rchan(struct udma_chan *uc)
 	}
 
 	uc->rchan = __udma_reserve_rchan(ud, uc->config.channel_tpl, -1);
-	if (IS_ERR(uc->rchan))
-		return PTR_ERR(uc->rchan);
 
-	return 0;
+	return PTR_ERR_OR_ZERO(uc->rchan);
 }
 
 static int udma_get_chan_pair(struct udma_chan *uc)
@@ -1373,10 +1369,8 @@ static int udma_get_rflow(struct udma_chan *uc, int flow_id)
 	}
 
 	uc->rflow = __udma_get_rflow(ud, flow_id);
-	if (IS_ERR(uc->rflow))
-		return PTR_ERR(uc->rflow);
 
-	return 0;
+	return PTR_ERR_OR_ZERO(uc->rflow);
 }
 
 static void udma_put_rchan(struct udma_chan *uc)
-- 
2.6.2