linux-kernel - [PATCH] ieee802154: ca8210: prevent memory leak

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Message-Id: <20190917224713.26371-1-navid.emamdoost@gmail.com>
Date:   Tue, 17 Sep 2019 17:47:12 -0500
From:   Navid Emamdoost <navid.emamdoost@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     emamd001@....edu, smccaman@....edu, kjlu@....edu,
        Navid Emamdoost <navid.emamdoost@...il.com>,
        Harry Morris <h.morris@...coda.com>,
        Alexander Aring <alex.aring@...il.com>,
        Stefan Schmidt <stefan@...enfreihafen.org>,
        "David S. Miller" <davem@...emloft.net>,
        linux-wpan@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] ieee802154: ca8210: prevent memory leak

In ca8210_probe the allocated pdata needs to be assigned to
spi_device->dev.platform_data before calling ca8210_get_platform_data. 
Othrwise when ca8210_get_platform_data fails pdata cannot be released.

Signed-off-by: Navid Emamdoost <navid.emamdoost@...il.com>
---
 drivers/net/ieee802154/ca8210.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ieee802154/ca8210.c b/drivers/net/ieee802154/ca8210.c
index b188fce3f641..229d70a897ca 100644
--- a/drivers/net/ieee802154/ca8210.c
+++ b/drivers/net/ieee802154/ca8210.c
@@ -3152,12 +3152,12 @@ static int ca8210_probe(struct spi_device *spi_device)
 		goto error;
 	}
 
+	priv->spi->dev.platform_data = pdata;
 	ret = ca8210_get_platform_data(priv->spi, pdata);
 	if (ret) {
 		dev_crit(&spi_device->dev, "ca8210_get_platform_data failed\n");
 		goto error;
 	}
-	priv->spi->dev.platform_data = pdata;
 
 	ret = ca8210_dev_com_init(priv);
 	if (ret) {
-- 
2.17.1