From: Inderpal Singh <inderpal.singh@linaro.org>
Date: Mon, 17 Sep 2012 04:27:45 +0000 (+0530)
Subject: DMA: PL330: return ENOMEM instead of 0 from pl330_alloc_chan_resources
X-Git-Tag: upstream/snapshot3+hdmi~6488^2~8
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=027478851791df751176398be02a3b1c5f6aa824;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

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@linaro.org>
Acked-by: Jassi Brar <jassisinghbrar@gmail.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
---

diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index 7e54369..28322dc 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -2390,7 +2390,7 @@ 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);