linux-kernel - [PATCH] DMA: PL330: return ENOMEM instead of 0 from pl330_alloc_chan

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Message-Id: <1347856065-14027-1-git-send-email-inderpal.singh@linaro.org>
Date:	Mon, 17 Sep 2012 09:57:45 +0530
From:	Inderpal Singh <inderpal.singh@...aro.org>
To:	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	kgene.kim@...sung.com, vinod.koul@...el.com, patches@...aro.org,
	boojin.kim@...sung.com, jassisinghbrar@...il.com,
	Inderpal Singh <inderpal.singh@...aro.org>
Subject: [PATCH] DMA: PL330: return ENOMEM instead of 0 from pl330_alloc_chan_resources

Since 0 is not considered as error at dmaengine level, return ENOMEM
from pl330_alloc_chan_resources in case of failure.

Signed-off-by: Inderpal Singh <inderpal.singh@...aro.org>
---
 drivers/dma/pl330.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index e4feba6..14d881c 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -2393,7 +2393,7 @@ static int pl330_alloc_chan_resources(struct dma_chan *chan)
 	pch->pl330_chid = pl330_request_channel(&pdmac->pif);
 	if (!pch->pl330_chid) {
 		spin_unlock_irqrestore(&pch->lock, flags);
-		return 0;
+		return -ENOMEM;
 	}
 
 	tasklet_init(&pch->task, pl330_tasklet, (unsigned long) pch);
-- 
1.7.9.5

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