linux-kernel - [PATCH -next] dmaengine: ste_dma40: fix error return code in d40

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Message-ID: <CAPgLHd-Mw4MQwS8=p9+ZBHHehH7B-Hs49BqiUMrq-aV_5M4pQQ@mail.gmail.com>
Date:	Tue, 28 May 2013 17:06:15 +0800
From:	Wei Yongjun <weiyj.lk@...il.com>
To:	srinidhi.kasagar@...ricsson.com, linus.walleij@...aro.org,
	djbw@...com, vinod.koul@...el.com
Cc:	yongjun_wei@...ndmicro.com.cn,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH -next] dmaengine: ste_dma40: fix error return code in d40_probe()

From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>

In many of the error handling case, the return value 'ret' not set
and 0 will be return from d40_probe() even if error, but we should
return a negative error code instead in those error handling case.
This patch fixed them, and also removed useless variable 'err'.

Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
---
 drivers/dma/ste_dma40.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 71bf4ec..cbf9c62 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -3474,7 +3474,6 @@ failure:
 
 static int __init d40_probe(struct platform_device *pdev)
 {
-	int err;
 	int ret = -ENOENT;
 	struct d40_base *base;
 	struct resource *res = NULL;
@@ -3576,6 +3575,7 @@ static int __init d40_probe(struct platform_device *pdev)
 		if (IS_ERR(base->lcpa_regulator)) {
 			d40_err(&pdev->dev, "Failed to get lcpa_regulator\n");
 			base->lcpa_regulator = NULL;
+			ret = PTR_ERR(base->lcpa_regulator);
 			goto failure;
 		}
 
@@ -3590,13 +3590,13 @@ static int __init d40_probe(struct platform_device *pdev)
 	}
 
 	base->initialized = true;
-	err = d40_dmaengine_init(base, num_reserved_chans);
-	if (err)
+	ret = d40_dmaengine_init(base, num_reserved_chans);
+	if (ret)
 		goto failure;
 
 	base->dev->dma_parms = &base->dma_parms;
-	err = dma_set_max_seg_size(base->dev, STEDMA40_MAX_SEG_SIZE);
-	if (err) {
+	ret = dma_set_max_seg_size(base->dev, STEDMA40_MAX_SEG_SIZE);
+	if (ret) {
 		d40_err(&pdev->dev, "Failed to set dma max seg size\n");
 		goto failure;
 	}

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