From aa3ee5f569fda51e54c224c0df60e187e9c5e582 Mon Sep 17 00:00:00 2001
From: Axel Lin <axel.lin@ingics.com>
Date: Sat, 26 Sep 2015 17:15:47 +0800
Subject: [PATCH] dmaengine: zxdma: Fix off-by-one for testing valid pchan
 request

The valid pchan range is 0 ~ d->dma_requests - 1.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Jun Nie <jun.nie@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---
 drivers/dma/zx296702_dma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/zx296702_dma.c b/drivers/dma/zx296702_dma.c
index 39915a6b7986..c017fcd8e07c 100644
--- a/drivers/dma/zx296702_dma.c
+++ b/drivers/dma/zx296702_dma.c
@@ -739,7 +739,7 @@ static struct dma_chan *zx_of_dma_simple_xlate(struct of_phandle_args *dma_spec,
 	struct dma_chan *chan;
 	struct zx_dma_chan *c;
 
-	if (request > d->dma_requests)
+	if (request >= d->dma_requests)
 		return NULL;
 
 	chan = dma_get_any_slave_channel(&d->slave);