linux-kernel - [PATCH -next] dma: cppi41: fix error return code in cppi41_dma

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Date:	Fri, 23 Aug 2013 10:59:15 +0800
From:	Wei Yongjun <weiyj.lk@...il.com>
To:	vinod.koul@...el.com, djbw@...com, grant.likely@...aro.org,
	rob.herring@...xeda.com
Cc:	yongjun_wei@...ndmicro.com.cn, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: [PATCH -next] dma: cppi41: fix error return code in cppi41_dma_probe()

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

Fix to return -EINVAL in the irq parse and map error handling
case instead of 0, as done elsewhere in this function.

Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
---
 drivers/dma/cppi41.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/dma/cppi41.c b/drivers/dma/cppi41.c
index 5dcebca..49ea05a 100644
--- a/drivers/dma/cppi41.c
+++ b/drivers/dma/cppi41.c
@@ -973,8 +973,10 @@ static int cppi41_dma_probe(struct platform_device *pdev)
 		goto err_chans;
 
 	irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
-	if (!irq)
+	if (!irq) {
+		ret = -EINVAL;
 		goto err_irq;
+	}
 
 	cppi_writel(USBSS_IRQ_PD_COMP, cdd->usbss_mem + USBSS_IRQ_ENABLER);
 

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