linux-kernel - [PATCH] dmaengine: cppi41: Fix channel queues array size check

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Date:   Thu, 21 Dec 2017 16:53:04 +0100
From:   Vasyl Gomonovych <gomonovych@...il.com>
To:     dan.j.williams@...el.com, vinod.koul@...el.com,
        dmaengine@...r.kernel.org, gomonovych@...il.com
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH] dmaengine: cppi41: Fix channel queues array size check

The test should be >= ARRAY_SIZE() instead of > ARRAY_SIZE().

Signed-off-by: Vasyl Gomonovych <gomonovych@...il.com>
---
 drivers/dma/cppi41.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/cppi41.c b/drivers/dma/cppi41.c
index f7e965f63274..d9bee65a18a4 100644
--- a/drivers/dma/cppi41.c
+++ b/drivers/dma/cppi41.c
@@ -934,7 +934,7 @@ static bool cpp41_dma_filter_fn(struct dma_chan *chan, void *param)
 
 	BUILD_BUG_ON(ARRAY_SIZE(am335x_usb_queues_rx) !=
 		     ARRAY_SIZE(am335x_usb_queues_tx));
-	if (WARN_ON(cchan->port_num > ARRAY_SIZE(am335x_usb_queues_rx)))
+	if (WARN_ON(cchan->port_num >= ARRAY_SIZE(am335x_usb_queues_rx)))
 		return false;
 
 	cchan->q_num = queues[cchan->port_num].submit;
-- 
1.9.1