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From: Dinghao Liu <dinghao.liu@zju.edu.cn>
To: dinghao.liu@zju.edu.cn, kjlu@umn.edu
Cc: Ajay Singh <ajay.kathat@microchip.com>,
	Claudiu Beznea <claudiu.beznea@microchip.com>,
	Kalle Valo <kvalo@codeaurora.org>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	Eugen Hristev <eugen.hristev@microchip.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH] [v2] wilc1000: Fix memleak in wilc_sdio_probe
Date: Thu, 20 Aug 2020 13:48:19 +0800
Message-ID: <20200820054819.23365-1-dinghao.liu@zju.edu.cn> (raw)

When devm_clk_get() returns -EPROBE_DEFER, sdio_priv
should be freed just like when wilc_cfg80211_init()
fails.

Fixes: 8692b047e86cf ("staging: wilc1000: look for rtc_clk clock")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
---

Changelog:

v2: - Remove 'staging' prefix in subject.
---
 drivers/net/wireless/microchip/wilc1000/sdio.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/microchip/wilc1000/sdio.c b/drivers/net/wireless/microchip/wilc1000/sdio.c
index 3ece7b0b0392..351ff909ab1c 100644
--- a/drivers/net/wireless/microchip/wilc1000/sdio.c
+++ b/drivers/net/wireless/microchip/wilc1000/sdio.c
@@ -149,9 +149,10 @@ static int wilc_sdio_probe(struct sdio_func *func,
 	wilc->dev = &func->dev;
 
 	wilc->rtc_clk = devm_clk_get(&func->card->dev, "rtc");
-	if (PTR_ERR_OR_ZERO(wilc->rtc_clk) == -EPROBE_DEFER)
+	if (PTR_ERR_OR_ZERO(wilc->rtc_clk) == -EPROBE_DEFER) {
+		kfree(sdio_priv);
 		return -EPROBE_DEFER;
-	else if (!IS_ERR(wilc->rtc_clk))
+	} else if (!IS_ERR(wilc->rtc_clk))
 		clk_prepare_enable(wilc->rtc_clk);
 
 	dev_info(&func->dev, "Driver Initializing success\n");
-- 
2.17.1


             reply index

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-20  5:48 Dinghao Liu [this message]
2020-08-20  5:56 ` Ajay.Kathat
2020-08-25  8:11 ` Claudiu.Beznea
2020-08-27 10:01 ` Kalle Valo

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