linux-kernel - [PATCH] net: bcmgenet: fix off-by-one comparison on timeout

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Date:   Tue, 28 Feb 2017 12:18:51 +0000
From:   Colin King <colin.king@...onical.com>
To:     Florian Fainelli <f.fainelli@...il.com>, netdev@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] net: bcmgenet: fix off-by-one comparison on timeout

From: Colin Ian King <colin.king@...onical.com>

At the end of the timeout loop, timeout will be 1001 and not 1000 and
so the timeout error will never be detected. Fix the off-by-one
comparison by checking to see if timeout is greater than 1000.

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/net/ethernet/broadcom/genet/bcmgenet.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index f928968..24e7201 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -1829,7 +1829,7 @@ static int reset_umac(struct bcmgenet_priv *priv)
 		udelay(1);
 	}
 
-	if (timeout == 1000) {
+	if (timeout > 1000) {
 		dev_err(kdev,
 			"timeout waiting for MAC to come out of reset\n");
 		return -ETIMEDOUT;
-- 
2.10.2