linux-kernel - [PATCH 5/6] dma/imx-sdma: use num_events to validate event

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Date:	Tue, 10 Jan 2012 15:01:49 +0800
From:	Richard Zhao <richard.zhao@...aro.org>
To:	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>
CC:	<dan.j.williams@...el.com>, <vinod.koul@...el.com>,
	<shawn.guo@...aro.org>, <kernel@...gutronix.de>,
	<eric.miao@...aro.org>, <patches@...aro.org>,
	Richard Zhao <richard.zhao@...aro.org>
Subject: [PATCH 5/6] dma/imx-sdma: use num_events to validate event_id0

event number is not always 32. use num_events for checking instead.

Signed-off-by: Richard Zhao <richard.zhao@...aro.org>
---
 drivers/dma/imx-sdma.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 015d93f..22fd561 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -723,7 +723,7 @@ static int sdma_config_channel(struct sdma_channel *sdmac)
 	sdmac->per_addr = 0;
 
 	if (sdmac->event_id0) {
-		if (sdmac->event_id0 > 32)
+		if (sdmac->event_id0 >= sdmac->sdma->num_events)
 			return -EINVAL;
 		sdma_event_enable(sdmac, sdmac->event_id0);
 	}
-- 
1.7.5.4


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