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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Li Qiong <liqiong@nfschina.com>,
        Stefan Schmidt <stefan@datenfreihafen.org>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 4.9 4/7] ieee802154: cc2520: add rc code in cc2520_tx()
Date:   Fri, 16 Sep 2022 12:07:47 +0200
Message-Id: <20220916100441.243133628@linuxfoundation.org>
In-Reply-To: <20220916100440.995894282@linuxfoundation.org>
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From: Li Qiong <liqiong@nfschina.com>

[ Upstream commit ffd7bdddaab193c38416fd5dd416d065517d266e ]

The rc code is 0 at the error path "status & CC2520_STATUS_TX_UNDERFLOW".
Assign rc code with '-EINVAL' at this error path to fix it.

Signed-off-by: Li Qiong <liqiong@nfschina.com>
Link: https://lore.kernel.org/r/20220829071259.18330-1-liqiong@nfschina.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ieee802154/cc2520.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ieee802154/cc2520.c b/drivers/net/ieee802154/cc2520.c
index d50add705a79a..436cf2007138a 100644
--- a/drivers/net/ieee802154/cc2520.c
+++ b/drivers/net/ieee802154/cc2520.c
@@ -512,6 +512,7 @@ cc2520_tx(struct ieee802154_hw *hw, struct sk_buff *skb)
 		goto err_tx;
 
 	if (status & CC2520_STATUS_TX_UNDERFLOW) {
+		rc = -EINVAL;
 		dev_err(&priv->spi->dev, "cc2520 tx underflow exception\n");
 		goto err_tx;
 	}
-- 
2.35.1