linux-kernel - [PATCH v2 net] net: ethernet: ti: am65-cpsw: Fix forever loop in cleanup code

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Message-ID: <8e7960cc-415d-48d7-99ce-f623022ec7b5@stanley.mountain>
Date: Sat, 28 Sep 2024 13:04:01 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Roger Quadros <rogerq@...nel.org>
Cc: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Julien Panis <jpanis@...libre.com>,
	Dan Carpenter <dan.carpenter@...aro.org>,
	Alexander Sverdlin <alexander.sverdlin@...mens.com>,
	Grygorii Strashko <grygorii.strashko@...com>,
	Chintan Vankar <c-vankar@...com>, Simon Horman <horms@...nel.org>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [PATCH v2 net] net: ethernet: ti: am65-cpsw: Fix forever loop in
 cleanup code

This error handling has a typo.  It should i++ instead of i--.  In the
original code the error handling will loop until it crashes.

Fixes: da70d184a8c3 ("net: ethernet: ti: am65-cpsw: Introduce multi queue Rx")
Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@...mens.com>
Reviewed-by: Roger Quadros <rogerq@...nel.org>
---
v2: The first version of this patch had white space corruption and didn't apply.

 drivers/net/ethernet/ti/am65-cpsw-nuss.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
index cbe99017cbfa..d253727b160f 100644
--- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c
+++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
@@ -763,7 +763,7 @@ static int am65_cpsw_nuss_common_open(struct am65_cpsw_common *common)
 	k3_udma_glue_disable_rx_chn(rx_chn->rx_chn);
 
 fail_rx:
-	for (i = 0; i < common->rx_ch_num_flows; i--)
+	for (i = 0; i < common->rx_ch_num_flows; i++)
 		k3_udma_glue_reset_rx_chn(rx_chn->rx_chn, i, &rx_chn->flows[i],
 					  am65_cpsw_nuss_rx_cleanup, 0);
 
-- 
2.45.2