From: Richard Zhao <richard.zhao@linaro.org>
Date: Fri, 13 Jan 2012 03:10:00 +0000 (+0800)
Subject: dma/imx-sdma: use num_events to validate event_id0
X-Git-Tag: firefly_0821_release~3680^2~3200^2~48
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b78bd91f47b28ba1290a7eb95d8cf48a357e1b90;p=firefly-linux-kernel-4.4.55.git

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@linaro.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
---

diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 1e0e516b481f..5eb96b53e6da 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);
 	}